diff --git a/dashboard/app/Http/Controllers/Api/DashboardController.php b/dashboard/app/Http/Controllers/Api/DashboardController.php
index c963d4d..4f40631 100644
--- a/dashboard/app/Http/Controllers/Api/DashboardController.php
+++ b/dashboard/app/Http/Controllers/Api/DashboardController.php
@@ -184,7 +184,6 @@ class DashboardController extends Controller
     public function covidLineageRelativeOverTime(Request $request)
     {
         $range = $this->getEpiRange($request);
-
         if (!$range) {
             return response()->json(['error' => 'Missing epiweek range'], 400);
         }
@@ -202,7 +201,6 @@ class DashboardController extends Controller
     public function influenzaRelativeOverTime(Request $request)
     {
         $range = $this->getEpiRange($request);
-
         if (!$range) {
             return response()->json(['error' => 'Missing epiweek range'], 400);
         }
@@ -218,6 +216,24 @@ class DashboardController extends Controller
     }
 
 
+    public function influenzaRelativeOverTimeSequencing(Request $request)
+    {
+        $range = $this->getEpiRange($request);
+        if (!$range) {
+            return response()->json(['error' => 'Missing epiweek range'], 400);
+        }
+
+        $data = $this->service->influenzaRelativeOverTimeSequencing(
+            $range['startYear'],
+            $range['startWeek'],
+            $range['endYear'],
+            $range['endWeek']
+        );
+
+        return response()->json($data);
+    }
+
+
 
 
 
diff --git a/dashboard/app/Services/DashboardService.php b/dashboard/app/Services/DashboardService.php
index 9e8c013..036e851 100644
--- a/dashboard/app/Services/DashboardService.php
+++ b/dashboard/app/Services/DashboardService.php
@@ -1020,7 +1020,7 @@ class DashboardService
             })
 
             ->selectRaw("
-                surveillance_cases.week_data as period,
+                concat(surveillance_cases.year_data,'-',surveillance_cases.week_data) as period,
                 subtype,
                 COUNT(DISTINCT surveillance_cases.lab_code) as total
             ")
@@ -1029,4 +1029,34 @@ class DashboardService
             ->orderBy('period')
             ->get();
     }
+
+
+    public function influenzaRelativeOverTimeSequencing($startYear, $startWeek, $endYear, $endWeek)
+    {
+        return SurveillanceCase::join('case_lab_results', function ($join) {
+            $join->on('surveillance_cases.lab_code', '=', 'case_lab_results.lab_code')
+                ->on('surveillance_cases.surveillance_id', '=', 'case_lab_results.surveillance_id');
+        })
+            ->where(function ($q) use ($startYear, $startWeek, $endYear, $endWeek) {
+                $q->whereRaw(
+                    "(surveillance_cases.year_data * 100 + surveillance_cases.week_data) BETWEEN ? AND ?",
+                    [
+                        $startYear * 100 + $startWeek,
+                        $endYear * 100 + $endWeek
+                    ]
+                );
+            })
+            ->whereRaw('case_lab_results.is_positive = 1 and surveillance_cases.surveillance_id in(6) and case_lab_results.indicator="Influenza"')
+            ->selectRaw("
+                case_lab_results.pathogen_name as lineage,
+                concat(surveillance_cases.year_data,'-',surveillance_cases.week_data) as week,
+                COUNT(DISTINCT surveillance_cases.lab_code) as total
+            ")
+            ->groupBy(
+                'case_lab_results.pathogen_name',
+                'week'
+            )
+            ->get();
+    }
+
 }
diff --git a/dashboard/app/Services/DataRetrievalService.php b/dashboard/app/Services/DataRetrievalService.php
index b696d37..733c82f 100644
--- a/dashboard/app/Services/DataRetrievalService.php
+++ b/dashboard/app/Services/DataRetrievalService.php
@@ -2,27 +2,80 @@
 
 namespace App\Services;
 
-use Carbon\Carbon;
-use App\Models\Surveillance;
-use App\Models\SurveillanceCase;
-use App\Models\CaseLabResult;
+use Illuminate\Http\Client\RequestException;
 use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Http;
 use Illuminate\Support\Facades\Log;
 
 class DataRetrievalService
 {
 
+    protected $apiBaseUrl;
+    protected $apiUsername;
+    protected $apiPassword;
+
+    public function __construct()
+    {
+        $this->apiBaseUrl = config('services.nphl_api.url');
+        $this->apiUsername = config('services.nphl_api.username');
+        $this->apiPassword = config('services.nphl_api.password');
+    }
+
+    public function get($endpoint)
+    {
+        try {
+
+            $ch = curl_init();
+            curl_setopt($ch, CURLOPT_URL, $this->apiBaseUrl . $endpoint);
+            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+            curl_setopt($ch, CURLOPT_ENCODING, '');
+            curl_setopt($ch, CURLOPT_MAXREDIRS, 10);
+            curl_setopt($ch, CURLOPT_TIMEOUT, 0);
+            curl_setopt($ch, CURL_HTTP_VERSION_1_1, 0);
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
+            curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
+            curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
+            curl_setopt($ch, CURLOPT_USERPWD, $this->apiUsername . ":" . $this->apiPassword);
+            $resp = curl_exec($ch);
+            $b="";
+            if($e = curl_error($ch)){
+                $b= $e;
+            }else{
+                $b= $resp;
+            }
+            curl_close($ch);
+            return $b;
+
+        } catch (RequestException $e) {
+            return [
+                'error' => true,
+                'message' => $e->getMessage(),
+                'status' => optional($e->response)->status()
+            ];
+        }
+    }
+
+
     public function getSurveillanceData()
     {
         try{
-            $toDate = now();
-            $this->getSARICases(now()->subDays(config('app.lookback_days.SARI'))->toDateString(), $toDate);  // done
-            $this->getILICases(now()->subDays(config('app.lookback_days.ILI'))->toDateString(), $toDate);  // done
-            $this->getLBMCases(now()->subDays(config('app.lookback_days.LBM'))->toDateString(), $toDate); // done
-            $this->getAFICases(now()->subDays(config('app.lookback_days.AFI'))->toDateString(), $toDate); // done
-            $this->getNSDCases(now()->subDays(config('app.lookback_days.NDS'))->toDateString(), $toDate);
-            $this->getSEQCases(now()->subDays(config('app.lookback_days.SEQ'))->toDateString(), $toDate); // done
-            Log::channel('jobs')->info($toDate->toDateString(). ' Service Reload Data Successfully Ran');
+            $lookbackDays = config('app.lookback_days');
+            $surveillances = DB::connection('mysql')->select("select * from surveillances");
+            foreach ($surveillances as $surveillance){
+                $surveillance_data = $this->get('api/labsurveil.php?surveillance_id='.$surveillance->id.'&start_date='.now()->subDays($lookbackDays[$surveillance->code])->toDateString());
+                $data = json_decode(preg_replace('/^\xEF\xBB\xBF/', '', $surveillance_data));
+                @$this->insert_surveillance_cases((array)$data->laboratory_cases);
+                @$this->insert_surveillance_case_lab_results((array)$data->laboratory_results);
+
+            }
+
+              //$this->getSARICases(now()->subDays(config('app.lookback_days.SARI'))->toDateString(), $toDate);  // done
+//            $this->getILICases(now()->subDays(config('app.lookback_days.ILI'))->toDateString(), $toDate);  // done
+//            $this->getLBMCases(now()->subDays(config('app.lookback_days.LBM'))->toDateString(), $toDate); // done
+//            $this->getAFICases(now()->subDays(config('app.lookback_days.AFI'))->toDateString(), $toDate); // done
+//            $this->getNSDCases(now()->subDays(config('app.lookback_days.NDS'))->toDateString(), $toDate);
+//            $this->getSEQCases(now()->subDays(config('app.lookback_days.SEQ'))->toDateString(), $toDate); // done
+            Log::channel('jobs')->info(now()->toDateString(). ' Service Reload Data Successfully Ran');
             return true;
         }
         catch (\Exception $e){
@@ -35,6 +88,7 @@ class DataRetrievalService
 
     public function getSARICases($dateFrom, $dateTo=NULL)
     {
+
         $cond = "";
         $cond .= " and patient.patdate >= '".date('Y-m-d', strtotime($dateFrom))."' ";
         $cond .= (!empty($dateTo)) ? " and patient.patdate <='".date('Y-m-d', strtotime($dateTo))."' ":"";
diff --git a/dashboard/config/services.php b/dashboard/config/services.php
index 6a90eb8..c093a4f 100644
--- a/dashboard/config/services.php
+++ b/dashboard/config/services.php
@@ -35,4 +35,10 @@ return [
         ],
     ],
 
+    'nphl_api' => [
+        'url' => env('NPHL_API_URL'),
+        'username' => env('NPHL_API_USERNAME'),
+        'password' => env('NPHL_API_PASSWORD'),
+    ],
+
 ];
diff --git a/dashboard/public/js/dashboard/charts.js b/dashboard/public/js/dashboard/charts.js
index bdda7d7..ed85032 100644
--- a/dashboard/public/js/dashboard/charts.js
+++ b/dashboard/public/js/dashboard/charts.js
@@ -8,7 +8,7 @@ Chart.register({
             (ds.data || []).some(v => Number(v) > 0)
         );
 
-        chart.$noData = !hasData; 
+        chart.$noData = !hasData;
 
         if (hasData) return;
 
@@ -94,7 +94,7 @@ function buildStackedChart(canvasId, labels, datasets) {
                     bottom: 30
                 }
             },
-            
+
 
             plugins: {
                 legend: {
@@ -159,9 +159,9 @@ function buildChart(id, type, labels, data) {
         layout: {
             padding: 30
         },
-        
 
-        indexAxis: isHorizontal ? 'y' : 'x',        
+
+        indexAxis: isHorizontal ? 'y' : 'x',
         plugins: {
 
             legend: {
@@ -189,7 +189,7 @@ function buildChart(id, type, labels, data) {
             },
             datalabels: {
                 color: "#282626",
-                offset: 6, 
+                offset: 6,
                 clip: false,
                 display: (ctx) => {
                     const chart = ctx.chart;
@@ -257,7 +257,7 @@ function buildChart(id, type, labels, data) {
             arc: {
                 borderWidth: (ctx) => ctx.chart.$noData ? 0 : 1
             }
-            
+
         };
     }
 
@@ -306,7 +306,7 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
 
                 },
 
-           
+
                 {
                     type: 'line',
                     label: 'COVID-19 %',
@@ -318,7 +318,7 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
                     pointStyle: 'line',
                 },
 
-               
+
                 {
                     type: 'bar',
                     label: 'Total Cases',
@@ -327,7 +327,7 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
                     borderRadius: 2,
                     barPercentage: 0.8,
                     categoryPercentage: 0.7,
-                    yAxisID: 'y', 
+                    yAxisID: 'y',
                 }
 
             ]
@@ -338,7 +338,6 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
         options: {
             responsive: true,
             maintainAspectRatio: false,
-
             plugins: {
                 legend: {
                     position: 'bottom',
@@ -351,6 +350,7 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
                     align: "top",
                     anchor: "end",
                     color: "#555",
+                    display: false,
                     font: {
                         size: 10
                     },
@@ -387,7 +387,7 @@ function buildMixedTrendChart(canvasId, labels, samples, fluRate, covidRate) {
                         display: true,
                         text: '% Positivity'
                     },
-                    
+
                 }
             }
         }
diff --git a/dashboard/public/js/dashboard/filter.js b/dashboard/public/js/dashboard/filter.js
index f6e9ddd..3e83bf2 100644
--- a/dashboard/public/js/dashboard/filter.js
+++ b/dashboard/public/js/dashboard/filter.js
@@ -75,8 +75,8 @@ class DashboardFilter {
 
         const year = new Date().getFullYear();
 
-        for (let y = year-20; y <= year; y++) {
 
+        for (let y = year; y >= year-20; y--) {
             this.startYear.innerHTML += `<option value="${y}">${y}</option>`;
             this.endYear.innerHTML += `<option value="${y}">${y}</option>`;
 
@@ -128,4 +128,4 @@ class DashboardFilter {
 
     }
 
-}
\ No newline at end of file
+}
diff --git a/dashboard/public/js/overview.js b/dashboard/public/js/overview.js
index 88f88a7..88a7db1 100644
--- a/dashboard/public/js/overview.js
+++ b/dashboard/public/js/overview.js
@@ -931,13 +931,13 @@ function addPositivityLegend() {
             <div style="background:white;padding:10px 12px;border-radius:6px;
                         box-shadow:0 2px 6px rgba(0,0,0,0.2);font-size:12px;">
                 <div style="font-weight:600;margin-bottom:6px;">Influenza Subtypes</div>
-                <div><span style="background: #2563eb; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/H1N1pdm</div>
+                <div><span style="background: #ff0200; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/H1N1pdm</div>
                 <div><span style="background: #11de9d; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/H3N2</div>
                 <div><span style="background: #b91081; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/H9N2</div>
                 <div><span style="background: #ad850d; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/H5N1</div>
                 <div><span style="background: #047393; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>A/Unsubtypable</div>
                 <div><span style="background: #9333ea; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>B/Yam</div>
-                <div><span style="background: #1021b9; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>B/Vic</div>
+                <div><span style="background: #086037; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>B/Vic</div>
                 <div><span style="background: #890512; border: 2px solid #aa9d9d; width:12px;height:12px;display:inline-block;margin-right:6px; border-radius: 50%;"></span>B/Unsubtypable</div>
             </div>
         `;
@@ -1036,10 +1036,10 @@ function loadProvinceMap(startYear, startWeek, endYear, endWeek) {
 
 function getColorByPathogen(name) {
     const colors = {
-        "A/H1N1pdm": "#2563eb",
+        "A/H1N1pdm": "#ff0200",
         "A/H3N2": "#11de9d",
         "B/Yam": "#9333ea",
-        "B/Vic" : "#1021b9",
+        "B/Vic" : "#086037",
         "A/H9N2": "#b91081",
         "A/H5N1": "#ad850d",
         "A/Unsubtypable": "#047393",
diff --git a/dashboard/public/js/sequencing.js b/dashboard/public/js/sequencing.js
index 6cfa5c8..daac952 100644
--- a/dashboard/public/js/sequencing.js
+++ b/dashboard/public/js/sequencing.js
@@ -1,20 +1,33 @@
 let sequencingChart;
+let covidLineageFrequencyChart;
+let influenzaSubtypeFrequencyChart;
+
 document.addEventListener("DOMContentLoaded", () => {
-      const canvas = document.getElementById('sequencingChart');
-    if (!canvas) return; 
+    //const canvas = document.getElementById('sequencingChart');
+    //if (!canvas) return;
     new DashboardFilter((startYear, startWeek, endYear, endWeek) => {
 
         fetch(`/api/dashboard/sequencing?surveillance_id=${window.SURVEILLANCE_ID}&start_year=${startYear}&start_week=${startWeek}&end_year=${endYear}&end_week=${endWeek}`)
             .then(res => res.json())
             .then(data => {
-                renderSequencingChart(data.trend || []);
+                //renderSequencingChart(data.trend || []);
                 renderSequencingCountChart(data.trend || []);
                 renderSequencingPieChart(data.distribution || []);
                 renderSequencingTotalChart(data.trend || []);
             });
 
+        loadCovidLineageFrequency('week', startYear, startWeek, endYear, endWeek)
+        loadInfluenzaSubtypeFrequency('week', startYear, startWeek, endYear, endWeek)
+
+        const elements = document.querySelectorAll(".report-period");
+        elements.forEach(el => {
+            el.textContent = 'Week ' + startWeek + ' of '+startYear+' to ' + 'Week ' + endWeek + ' of ' + endYear
+        });
+
     });
 
+
+
 });
 
 function renderSequencingCountChart(rows) {
@@ -39,7 +52,7 @@ function renderSequencingCountChart(rows) {
             const found = rows.find(r => r.period === w && r.subtype === sub);
             return found ? found.total : 0;
         }),
-        backgroundColor: colors[i % colors.length]
+        backgroundColor: hexToRGBA(colors[i % colors.length], 0.3)// colors[i % colors.length]
     }));
 
     new Chart(ctx, {
@@ -59,6 +72,9 @@ function renderSequencingCountChart(rows) {
                     display: true,
                     position: 'bottom',
                     align: 'center'
+                },
+                datalabels: {
+                    display: true
                 }
             }
 
@@ -123,9 +139,13 @@ function renderSequencingTotalChart(rows) {
         options: {
             maintainAspectRatio: false,
             plugins: {
-                legend: { display: false }
+                legend: { display: false },
+                datalabels: {
+                    display: false
+                }
             },
 
+
         }
     });
 }
@@ -176,6 +196,8 @@ function renderSequencingChart(rows) {
         }
     });
 
+    console.log('aggregated', aggregated)
+
     const cleanRows = Object.values(aggregated);
 
     const weeks = [...new Set(cleanRows.map(r => r.period))];
@@ -235,4 +257,310 @@ function renderSequencingChart(rows) {
             }
         }
     });
-}
\ No newline at end of file
+}
+
+
+
+function hexToRGBA(hex, alpha) {
+    const r = parseInt(hex.slice(1, 3), 16);
+    const g = parseInt(hex.slice(3, 5), 16);
+    const b = parseInt(hex.slice(5, 7), 16);
+    return `rgba(${r}, ${g}, ${b}, ${alpha})`;
+}
+
+function loadCovidLineageFrequency(periodType, startYear, startWeek, endYear, endWeek) {
+
+    fetch(`/api/dashboard/covid-lineage-frequency?period_type=${periodType}&start_year=${startYear}&start_week=${startWeek}&end_year=${endYear}&end_week=${endWeek}`)
+        .then(res => res.json())
+        .then(data => {
+
+            // Extract unique weeks (X-axis)
+            const weeks = [...new Set(data.map(item => item.week))].sort();
+
+            // Extract unique lineages
+            const lineages = [...new Set(data.map(item => item.lineage))];
+
+            // Color palette
+            const colors = [
+                '#84cc16','#22c55e','#06b6d4','#3b82f6',
+                '#6366f1','#a855f7','#ec4899','#ef4444',
+                '#f97316','#eab308'
+            ];
+
+            // Build datasets
+            const datasets = lineages.map((lineage, index) => {
+                const lineageData = weeks.map(week => {
+                    const found = data.find(
+                        item => item.week === week && item.lineage === lineage
+                    );
+                    return found ? found.total : 0;
+                });
+
+                return {
+                    label: lineage,
+                    data: lineageData,
+                    fill: true,                      // area fill
+                    tension: 0.4,                    // smooth curve
+                    borderColor: 'transparent',      // hide the line
+                    borderWidth: 0,
+                    pointRadius: 0,                  // hide points
+                    backgroundColor: hexToRGBA(colors[index % colors.length], 0.3),
+                    stack: 'total'
+                };
+            });
+
+            // Destroy previous chart if exists
+            if (covidLineageFrequencyChart) covidLineageFrequencyChart.destroy();
+
+            const ctx = document.getElementById('covidLineageFrequency').getContext('2d');
+
+            covidLineageFrequencyChart = new Chart(ctx, {
+                type: 'line',
+                data: {
+                    labels: weeks,
+                    datasets: datasets
+                },
+                options: {
+                    responsive: true,
+                    maintainAspectRatio: false,
+                    interaction: {
+                        mode: 'index',
+                        intersect: false
+                    },
+                    plugins: {
+                        legend: {
+                            display: false // hide default legend
+                        },
+                        tooltip: {
+                            mode: 'index',
+                            intersect: false
+                        },
+                        datalabels: {
+                            display: false // hide labels
+                        }
+                    },
+                    scales: {
+                        x: {
+                            stacked: true,
+                            title: {
+                                display: true,
+                                text: 'Week'
+                            },
+                            grid:{
+                                display: false
+                            }
+                        },
+                        y: {
+                            stacked: true,
+                            beginAtZero: true,
+                            title: {
+                                display: true,
+                                text: 'Relative Frequency'
+                            },
+                        }
+                    }
+                }
+            });
+
+            // -------------------------
+            // Custom right-side scrollable legend
+            // -------------------------
+            const legendContainer = document.getElementById('legendContainer');
+            legendContainer.innerHTML = ''; // clear old legend
+
+            datasets.forEach((dataset, index) => {
+                const item = document.createElement('div');
+                item.style.display = 'flex';
+                item.style.alignItems = 'center';
+                item.style.marginBottom = '4px';
+                item.style.fontSize = '11px';
+                item.style.cursor = 'pointer';
+                item.innerHTML = `
+                    <span style="width:15px;height:15px;background:${dataset.backgroundColor};display:inline-block;margin-right:8px;"></span>
+                    ${dataset.label}
+                `;
+
+                item.addEventListener('click', () => {
+                    const meta = covidLineageFrequencyChart.getDatasetMeta(index);
+
+                    // If the clicked dataset is already the only visible one, show all
+                    const allHidden = datasets.every((d, i) => covidLineageFrequencyChart.getDatasetMeta(i).hidden || i === index);
+                    if (!allHidden) {
+                        // Hide all datasets
+                        datasets.forEach((d, i) => {
+                            covidLineageFrequencyChart.getDatasetMeta(i).hidden = true;
+                        });
+                        // Show only clicked
+                        meta.hidden = false;
+                    } else {
+                        // Show all datasets
+                        datasets.forEach((d, i) => {
+                            covidLineageFrequencyChart.getDatasetMeta(i).hidden = false;
+                        });
+                    }
+
+                    covidLineageFrequencyChart.update();
+
+                    // Update legend opacity
+                    Array.from(legendContainer.children).forEach((child, i) => {
+                        const metaItem = covidLineageFrequencyChart.getDatasetMeta(i);
+                        child.style.opacity = metaItem.hidden ? 0.5 : 1;
+                    });
+                });
+
+                legendContainer.appendChild(item);
+            });
+
+            // Scrollable CSS (in case legend is long)
+            legendContainer.style.maxHeight = '375px';
+            legendContainer.style.overflowY = 'auto';
+            legendContainer.style.padding = '8px';
+            legendContainer.style.borderRadius = '0px';
+        });
+}
+
+function loadInfluenzaSubtypeFrequency(periodType, startYear, startWeek, endYear, endWeek) {
+
+    fetch(`/api/dashboard/influenza-relative-frequency-sequencing?period_type=${periodType}&start_year=${startYear}&start_week=${startWeek}&end_year=${endYear}&end_week=${endWeek}`)
+        .then(res => res.json())
+        .then(data => {
+
+            // Extract unique weeks (X-axis)
+            const weeks = [...new Set(data.map(item => item.week))].sort();
+
+            const colors = [
+                '#84cc16','#22c55e','#06b6d4','#3b82f6',
+                '#6366f1','#a855f7','#ec4899','#ef4444',
+                '#f97316','#eab308'
+            ];
+
+            // Extract unique lineages
+            const lineages = [...new Set(data.map(item => item.lineage))];
+            // Build datasets
+            const datasets = lineages.map((lineage, index) => {
+                const lineageData = weeks.map(week => {
+                    const found = data.find(
+                        item => item.week === week && item.lineage === lineage
+                    );
+                    return found ? found.total : 0;
+                });
+
+                return {
+                    label: lineage,
+                    data: lineageData,
+                    fill: true,                      // area fill
+                    tension: 0.4,                    // smooth curve
+                    borderColor: 'transparent',      // hide the line
+                    borderWidth: 0,
+                    pointRadius: 0,                  // hide points
+                    backgroundColor: hexToRGBA(colors[(index*2) % colors.length], 0.8),
+                    stack: 'total'
+                };
+            });
+
+            // Destroy previous chart if exists
+            if (influenzaSubtypeFrequencyChart) influenzaSubtypeFrequencyChart.destroy();
+
+            const ctx = document.getElementById('influenzaSubtypeFrequency').getContext('2d');
+
+            influenzaSubtypeFrequencyChart = new Chart(ctx, {
+                type: 'line',
+                data: {
+                    labels: weeks,
+                    datasets: datasets
+                },
+                options: {
+                    responsive: true,
+                    maintainAspectRatio: false,
+                    interaction: {
+                        mode: 'index',
+                        intersect: false
+                    },
+                    plugins: {
+                        legend: {
+                            display: false // hide default legend
+                        },
+                        tooltip: {
+                            mode: 'index',
+                            intersect: false
+                        },
+                        datalabels: {
+                            display: false // hide labels
+                        }
+                    },
+                    scales: {
+                        x: {
+                            stacked: true,
+                            title: {
+                                display: true,
+                                text: 'Week'
+                            },
+                            grid:{
+                                display: false
+                            }
+                        },
+                        y: {
+                            stacked: true,
+                            beginAtZero: true,
+                            title: {
+                                display: true,
+                                text: 'Relative Frequency'
+                            },
+                        }
+                    }
+                }
+            });
+
+            const legendContainer = document.getElementById('legendContainerInfluenzaSubtypeFrequency');
+            legendContainer.innerHTML = ''; // clear old legend
+
+            datasets.forEach((dataset, index) => {
+                const item = document.createElement('div');
+                item.style.display = 'flex';
+                item.style.alignItems = 'center';
+                item.style.marginBottom = '4px';
+                item.style.fontSize = '11px';
+                item.style.cursor = 'pointer';
+                item.innerHTML = `
+                    <span style="width:15px;height:15px;background:${dataset.backgroundColor};display:inline-block;margin-right:8px;"></span>
+                    ${dataset.label}
+                `;
+
+                item.addEventListener('click', () => {
+                    const meta = influenzaSubtypeFrequencyChart.getDatasetMeta(index);
+
+                    // If the clicked dataset is already the only visible one, show all
+                    const allHidden = datasets.every((d, i) => influenzaSubtypeFrequencyChart.getDatasetMeta(i).hidden || i === index);
+                    if (!allHidden) {
+                        // Hide all datasets
+                        datasets.forEach((d, i) => {
+                            influenzaSubtypeFrequencyChart.getDatasetMeta(i).hidden = true;
+                        });
+                        // Show only clicked
+                        meta.hidden = false;
+                    } else {
+                        // Show all datasets
+                        datasets.forEach((d, i) => {
+                            influenzaSubtypeFrequencyChart.getDatasetMeta(i).hidden = false;
+                        });
+                    }
+
+                    influenzaSubtypeFrequencyChart.update();
+
+                    // Update legend opacity
+                    Array.from(legendContainer.children).forEach((child, i) => {
+                        const metaItem = influenzaSubtypeFrequencyChart.getDatasetMeta(i);
+                        child.style.opacity = metaItem.hidden ? 0.5 : 1;
+                    });
+                });
+
+                legendContainer.appendChild(item);
+            });
+
+            // Scrollable CSS (in case legend is long)
+            legendContainer.style.maxHeight = '375px';
+            legendContainer.style.overflowY = 'auto';
+            legendContainer.style.padding = '8px';
+            legendContainer.style.borderRadius = '0px';
+        });
+}
diff --git a/dashboard/resources/views/dashboard/overview.blade.php b/dashboard/resources/views/dashboard/overview.blade.php
index 92f6985..700b758 100644
--- a/dashboard/resources/views/dashboard/overview.blade.php
+++ b/dashboard/resources/views/dashboard/overview.blade.php
@@ -47,7 +47,6 @@
 
                                 <div class="card shadow-sm mb-3" style="height:60vh;">
                                     <div class="card-body" >
-
                                         <h5 class="fw-bold">Epidemic Trend</h5>
                                         <p class="text-muted small report-period">
                                             (based on selected epiweek range)
@@ -108,11 +107,11 @@
                                         <p class="text-muted small report-period">
                                             (based on selected epiweek range)
                                         </p>
-                                        <canvas id="covidLineageFrequency" style=" flex:1; max-width: 90%; max-height:45vh; float: left;"></canvas>
+                                        <canvas id="covidLineageFrequency" style=" flex:1; max-width: 90%; max-height:40vh; float: left;"></canvas>
                                         <div id="legendContainer" style="
                                             width:10%;
                                             margin-left:20px;
-                                            max-height:375px;
+                                            max-height:360px;
                                             overflow-y:auto;
                                             padding:8px;
 
@@ -134,7 +133,7 @@
                                         <p class="text-muted small report-period">
                                             (based on selected epiweek range)
                                         </p>
-                                        <canvas id="influenzaSubtypeFrequency" style=" flex:1; max-width: 90%; max-height:45vh; float: left;"></canvas>
+                                        <canvas id="influenzaSubtypeFrequency" style=" flex:1; max-width: 90%; max-height:40vh; float: left;"></canvas>
                                         <div id="legendContainerInfluenzaSubtypeFrequency" style="
                                             width:10%;
                                             margin-left:20px;
diff --git a/dashboard/resources/views/dashboard/sequencing.blade.php b/dashboard/resources/views/dashboard/sequencing.blade.php
index 6ee0482..a001db2 100644
--- a/dashboard/resources/views/dashboard/sequencing.blade.php
+++ b/dashboard/resources/views/dashboard/sequencing.blade.php
@@ -27,32 +27,75 @@
             </div>
         </div>
 
-        <div class="card">
-            <div class="card-body" style="height:600px;">
-                <canvas id="sequencingChart"></canvas>
+        <div class="row mt-3">
+
+            <div class="col-md-5">
+                <div class="card">
+                    <div class="card-body" style="height:500px;">
+                        <h5 class="fw-bold">Total Sequenced Samples Over Time</h5>
+                        <p class="text-muted small report-period">
+                            (based on selected epiweek range)
+                        </p>
+                        <canvas id="sequencingTotalChart" style=" flex:1; max-height:40vh; float: left;"></canvas>
+                    </div>
+                </div>
             </div>
+
+            <div class="col-md-7">
+                <div class="card">
+                    <div class="card-body" style="height:500px;">
+                        <h5 class="fw-bold">Influenza Subtypes Relative Frequencies Over Time</h5>
+                        <p class="text-muted small report-period">
+                            (based on selected epiweek range)
+                        </p>
+                        <canvas id="influenzaSubtypeFrequency" style=" flex:1; max-width: 85%; max-height:40vh; float: left;"></canvas>
+                        <div id="legendContainerInfluenzaSubtypeFrequency" style="
+                            width:15%;
+                            margin-left:20px;
+                            max-height:375px;
+                            overflow-y:auto;
+                            padding:8px;
+                        "></div>
+                    </div>
+                </div>
+            </div>
+
         </div>
         <div class="row mt-3">
 
             <!-- Counts -->
-            <div class="col-md-6">
+            <div class="col-md-12">
                 <div class="card">
-                    <div class="card-body" style="height:600px;">
-                        <h6 class="fw-bold">Lineage Counts Over Time</h6>
-                        <canvas id="sequencingCountChart"></canvas>
+                    <div class="card-body" style="height:500px;">
+                        <h6 class="fw-bold">SARS-CoV-2 Lineage/Sublineage Relative Frequencies Over Time</h6>
+                        <p class="text-muted small report-period">
+                            (based on selected epiweek range)
+                        </p>
+{{--                        <canvas id="sequencingCountChart"></canvas>--}}
+                        <canvas id="covidLineageFrequency" style=" flex:1; max-width: 90%; max-height:40vh; float: left;"></canvas>
+                        <div id="legendContainer" style="
+                            width:10%;
+                            margin-left:20px;
+                            max-height:360px;
+                            overflow-y:auto;
+                            padding:8px;
+
+                        "></div>
                     </div>
                 </div>
             </div>
 
+{{--                    <div class="col-md-4">--}}
+{{--                        <div class="card">--}}
+{{--                            <div class="card-body" style="height:500px;">--}}
+{{--                                <canvas id="sequencingChart"></canvas>--}}
+{{--                                <canvas id="sequencingCountChart"></canvas>--}}
+{{--                            </div>--}}
+{{--                        </div>--}}
+{{--                    </div>--}}
+
             <!-- Distribution -->
-            <div class="col-md-6">
-                <div class="card">
-                    <div class="card-body" style="height:600px;">
-                        <h6 class="fw-bold">Total Sequenced Samples Over Time</h6>
-                        <canvas id="sequencingTotalChart" style="height: 550px;"></canvas>
-                    </div>
-                </div>
-            </div>
+
 
         </div>
 
@@ -62,8 +105,8 @@
 
 @section('scripts')
     <script>
-        window.SURVEILLANCE_ID = 6; 
+        window.SURVEILLANCE_ID = 6;
     </script>
 
     <script src="/js/sequencing.js"></script>
-@endsection
\ No newline at end of file
+@endsection
diff --git a/dashboard/resources/views/layouts/app.blade.php b/dashboard/resources/views/layouts/app.blade.php
index 8e621e9..163044f 100644
--- a/dashboard/resources/views/layouts/app.blade.php
+++ b/dashboard/resources/views/layouts/app.blade.php
@@ -46,6 +46,9 @@
             top: 0;
             z-index: 1000;
         }
+        .btn{
+            border-radius: 0 !important;
+        }
 
         .btn-theme-outline {
             background-color: #fff;
@@ -263,4 +266,4 @@
 </script>
 
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/dashboard/routes/api.php b/dashboard/routes/api.php
index fafcf38..0210d77 100644
--- a/dashboard/routes/api.php
+++ b/dashboard/routes/api.php
@@ -11,6 +11,7 @@ Route::get('/dashboard/influenza-subtype-distribution', [DashboardController::cl
 Route::get('/dashboard/covid-distributed-by-age-group', [DashboardController::class, 'covidDistributedByAgeGroup']);
 Route::get('/dashboard/covid-lineage-frequency', [DashboardController::class, 'covidLineageRelativeOverTime']);
 Route::get('/dashboard/influenza-relative-frequency', [DashboardController::class, 'influenzaRelativeOverTime']);
+Route::get('/dashboard/influenza-relative-frequency-sequencing', [DashboardController::class, 'influenzaRelativeOverTimeSequencing']);
 Route::get('/dashboard/sentinel-map', [DashboardController::class, 'sentinelMap']);
 Route::get('/dashboard/reload', [DashboardController::class, 'fetchSourceData']);
 Route::get('/dashboard/sequencing', [DashboardController::class, 'sequencing']);