diff --git a/docs/SymptomsCausedByDrugs/index.html b/docs/SymptomsCausedByDrugs/index.html
index 91ff432b899..243d67e9e6b 100644
--- a/docs/SymptomsCausedByDrugs/index.html
+++ b/docs/SymptomsCausedByDrugs/index.html
@@ -27,6 +27,7 @@
   <link href="../forkMeOnGitHub.css" rel="stylesheet" type="text/css" />
   <script src="../Utils.js"></script>
   <script src="../UIUtils.js"></script>
+  <script src="../UrlUtils.js"></script>
   <script src="../NumberWithBarElementFactory.js"></script>
   <script src="./js/PrrByKey2CsvConverter.js"></script>
   <script src="./js/PageInitializer.js"></script>
@@ -42,22 +43,18 @@
       "DOMContentLoaded",
       event => {
         const name = 'Drug';
-        const symptomSearchParam = new SearchParam('symptom');
-        const vaccineSearchParam = new SearchParam('vaccine');
         PageInitializer.initializePage(
           {
             symptom: {
               symptomSelectElement: $('#symptomSelect'),
-              selectSymptom: symptomSearchParam.get(),
-              onSymptomSelected: symptom => symptomSearchParam.set(symptom),
+              searchParam: new SearchParam('symptom'),
               prrByVaccineTableElement: $('#prrByVaccineTable'),
               downloadPrrByVaccineTableButton: document.querySelector("#downloadPrrByVaccineTable"),
               keyColumnName: name
             },
             vaccine: {
               vaccineSelectElement: $('#vaccineSelect'),
-              selectVaccine: vaccineSearchParam.get(),
-              onVaccineSelected: vaccine => vaccineSearchParam.set(vaccine),
+              searchParam: new SearchParam('vaccine'),
               prrBySymptomTableElement: $('#prrBySymptomTable'),
               downloadPrrBySymptomTableButton: document.querySelector("#downloadPrrBySymptomTable"),
               valueName: name
diff --git a/docs/SymptomsCausedByDrugs/js/PageInitializer.js b/docs/SymptomsCausedByDrugs/js/PageInitializer.js
index e4a1ee846a2..d5c094d6107 100644
--- a/docs/SymptomsCausedByDrugs/js/PageInitializer.js
+++ b/docs/SymptomsCausedByDrugs/js/PageInitializer.js
@@ -5,29 +5,29 @@ class PageInitializer {
         PageInitializer.#configureVaccine(vaccine);
     }
 
-    static #configureSymptom({ symptomSelectElement, selectSymptom, onSymptomSelected, prrByVaccineTableElement, downloadPrrByVaccineTableButton, keyColumnName }) {
+    static #configureSymptom({ symptomSelectElement, searchParam, prrByVaccineTableElement, downloadPrrByVaccineTableButton, keyColumnName }) {
         const prrByVaccineTableView = new PrrByVaccineTableView(prrByVaccineTableElement, downloadPrrByVaccineTableButton, keyColumnName);
         Select2.initializeSelectElement(
             {
                 selectElement: symptomSelectElement,
-                textOfOption2Select: selectSymptom,
+                textOfOption2Select: searchParam.get(),
                 onValueSelected: (id, text) => {
                     prrByVaccineTableView.displayPrrByVaccineTable4Symptom(id, text);
-                    onSymptomSelected(text);
+                    searchParam.set(text);
                 },
                 minimumInputLength: 0
             });
     }
 
-    static #configureVaccine({ vaccineSelectElement, selectVaccine, onVaccineSelected, prrBySymptomTableElement, downloadPrrBySymptomTableButton, valueName }) {
+    static #configureVaccine({ vaccineSelectElement, searchParam, prrBySymptomTableElement, downloadPrrBySymptomTableButton, valueName }) {
         const prrBySymptomTableView = new PrrBySymptomTableView(prrBySymptomTableElement, downloadPrrBySymptomTableButton, valueName);
         Select2.initializeSelectElement(
             {
                 selectElement: vaccineSelectElement,
-                textOfOption2Select: selectVaccine,
+                textOfOption2Select: searchParam.get(),
                 onValueSelected: (id, text) => {
                     prrBySymptomTableView.displayPrrBySymptomTable4Vaccine(id, text);
-                    onVaccineSelected(text);
+                    searchParam.set(text);
                 },
                 minimumInputLength: 0
             });
diff --git a/docs/SymptomsCausedByDrugs/js/PrrByKeyTableView.js b/docs/SymptomsCausedByDrugs/js/PrrByKeyTableView.js
index 715f8473e5d..378f5c30130 100644
--- a/docs/SymptomsCausedByDrugs/js/PrrByKeyTableView.js
+++ b/docs/SymptomsCausedByDrugs/js/PrrByKeyTableView.js
@@ -33,7 +33,7 @@ class PrrByKeyTableView {
     }
 
     #downloadPrrByKey() {
-        UIUtils.downloadUrlAsFilename(
+        UrlUtils.downloadUrlAsFilename(
             window.URL.createObjectURL(
                 new Blob(
                     [this.#prrByKeyTable.getDisplayedTableAsCsv(`# ${this.#valueName}: ${this.#text}`)],
diff --git a/docs/SymptomsCausedByDrugs/js/SearchParam.js b/docs/SymptomsCausedByDrugs/js/SearchParam.js
index 6c911f2f467..d22583d1bec 100644
--- a/docs/SymptomsCausedByDrugs/js/SearchParam.js
+++ b/docs/SymptomsCausedByDrugs/js/SearchParam.js
@@ -7,10 +7,10 @@ class SearchParam {
     }
 
     get() {
-        return UIUtils.getSearchParamOfCurrentUrl(this.#name);
+        return UrlUtils.getSearchParamOfCurrentUrl(this.#name);
     }
 
     set(value) {
-        UIUtils.setSearchParamOfCurrentUrl(this.#name, value);
+        UrlUtils.setSearchParamOfCurrentUrl(this.#name, value);
     }
 }
\ No newline at end of file
diff --git a/docs/SymptomsCausedByVaccines/index.html b/docs/SymptomsCausedByVaccines/index.html
index a72065159ff..b318664b19b 100644
--- a/docs/SymptomsCausedByVaccines/index.html
+++ b/docs/SymptomsCausedByVaccines/index.html
@@ -26,6 +26,7 @@
 <link href="../forkMeOnGitHub.css" rel="stylesheet" type="text/css"/>
 <script src="../Utils.js"></script>
 <script src="../UIUtils.js"></script>
+<script src="../UrlUtils.js"></script>
 <script src="../NumberWithBarElementFactory.js"></script>
 <script src="../SymptomsCausedByDrugs/js/PrrByKey2CsvConverter.js"></script>
 <script src="../SymptomsCausedByDrugs/js/PageInitializer.js"></script>
diff --git a/docs/UIUtils.js b/docs/UIUtils.js
index d5b113f62a0..668fc8758d5 100644
--- a/docs/UIUtils.js
+++ b/docs/UIUtils.js
@@ -27,32 +27,4 @@ class UIUtils {
     static getSelectedOption(selectElement) {
         return selectElement.options[selectElement.selectedIndex];
     }
-
-    static getSearchParam(urlParams, searchParam, defaultValue) {
-        return urlParams.has(searchParam) ?
-            urlParams.get(searchParam) :
-            defaultValue;
-    }
-
-    static isSearchParamYES(urlParams, searchParam) {
-        return UIUtils.getSearchParam(urlParams, searchParam, 'NO').toUpperCase() == 'YES';
-    }
-
-    static getSearchParamOfCurrentUrl(searchParam) {
-        const urlSearchParams = new URLSearchParams(window.location.search);
-        return UIUtils.getSearchParam(urlSearchParams, searchParam, null)
-    }
-
-    static setSearchParamOfCurrentUrl(nameOfSearchParam, valueOfSearchParam) {
-        const url = new URL(window.location.href);
-        url.searchParams.set(nameOfSearchParam, valueOfSearchParam);
-        window.history.replaceState(null, "", url);
-    }
-
-    static downloadUrlAsFilename(url, filename) {
-        const a = document.createElement('a');
-        a.setAttribute('href', url);
-        a.setAttribute('download', filename);
-        a.click();
-    }
 }
diff --git a/docs/UrlUtils.js b/docs/UrlUtils.js
new file mode 100644
index 00000000000..eb84b60ebab
--- /dev/null
+++ b/docs/UrlUtils.js
@@ -0,0 +1,38 @@
+class UrlUtils {
+
+    static isSearchParamYES(urlParams, searchParam) {
+        return UrlUtils.#getSearchParam(urlParams, searchParam, 'NO').toUpperCase() == 'YES';
+    }
+
+    static getSearchParamOfCurrentUrl(searchParam) {
+        return UrlUtils.#getSearchParam(
+            new URLSearchParams(window.location.search), 
+            searchParam, 
+            null)
+    }
+
+    static setSearchParamOfCurrentUrl(nameOfSearchParam, valueOfSearchParam) {
+        UrlUtils.#setSearchParam(
+            new URL(window.location.href),
+            nameOfSearchParam,
+            valueOfSearchParam);
+    }
+
+    static downloadUrlAsFilename(url, filename) {
+        const a = document.createElement('a');
+        a.setAttribute('href', url);
+        a.setAttribute('download', filename);
+        a.click();
+    }
+
+    static #getSearchParam(urlParams, searchParam, defaultValue) {
+        return urlParams.has(searchParam) ?
+            urlParams.get(searchParam) :
+            defaultValue;
+    }
+
+    static #setSearchParam(url, nameOfSearchParam, valueOfSearchParam) {
+        url.searchParams.set(nameOfSearchParam, valueOfSearchParam);
+        window.history.replaceState(null, "", url);
+    }
+}
diff --git a/docs/batchCodes.html b/docs/batchCodes.html
index e11eeef01ce..59b4daf8988 100644
--- a/docs/batchCodes.html
+++ b/docs/batchCodes.html
@@ -30,6 +30,7 @@
   <script src="https://cdn.jsdelivr.net/npm/chart.js@4.2.0/dist/chart.umd.min.js"></script>
   <script src="./Utils.js"></script>
   <script src="./UIUtils.js"></script>
+  <script src="./UrlUtils.js"></script>
   <script src="./DataTablesFilter.js"></script>
   <script src="./ColumnSearch.js"></script>
   <script src="./BatchCodeTableInitializer.js"></script>
@@ -41,8 +42,8 @@
       new BatchCodeTableInitializer().initialize(
         {
           batchCodeTableElement: $('#batchCodeTable'),
-          showCountriesColumn: UIUtils.isSearchParamYES(urlSearchParams, 'showCountriesColumn'),
-          showDataTablesFilter: UIUtils.isSearchParamYES(urlSearchParams, 'showDataTablesFilter'),
+          showCountriesColumn: UrlUtils.isSearchParamYES(urlSearchParams, 'showCountriesColumn'),
+          showDataTablesFilter: UrlUtils.isSearchParamYES(urlSearchParams, 'showDataTablesFilter'),
         });
     });
   </script>