diff --git a/docs/SymptomsCausedByVaccines/js/PrrByVaccineTable.js b/docs/SymptomsCausedByVaccines/js/PrrByVaccineTable.js
index c2a5cbd9401..fc77d248933 100644
--- a/docs/SymptomsCausedByVaccines/js/PrrByVaccineTable.js
+++ b/docs/SymptomsCausedByVaccines/js/PrrByVaccineTable.js
@@ -44,10 +44,23 @@ class PrrByVaccineTable {
                                     .outerHTML,
                             targets: [this.#getColumnIndex('Proportional Reporting Ratio')]
                         }
-                    ]
+                    ],
+                createdRow: (row, data) => {
+                    this.#markRowIfPrrTooHigh(
+                        {
+                            prr: data[this.#getColumnIndex('Proportional Reporting Ratio')],
+                            row: row
+                        });
+                }
             });
     }
 
+    #markRowIfPrrTooHigh({ prr, row }) {
+        if (prr > 1.0) {
+            $(row).addClass('prrTooHigh');
+        }
+    }
+
     #getColumnIndex(columnName) {
         switch (columnName) {
             case 'Vaccine':
diff --git a/docs/gentelella/build/css/custom.css b/docs/gentelella/build/css/custom.css
index a33e4918ef3..8b2e3cf183d 100644
--- a/docs/gentelella/build/css/custom.css
+++ b/docs/gentelella/build/css/custom.css
@@ -4922,4 +4922,8 @@ table thead .checkbox.radio { margin-top:-7px;margin-top:-21px; }
 .bar {
     height: 3px;
     background-color: #1a73e8;
+}
+
+table.dataTable.display tbody tr.prrTooHigh {
+    background-color: rgba(255, 0, 0, 10%);
 }
\ No newline at end of file