diff --git a/.gitignore b/.gitignore
index 14e15ff4fc7..3b0fa91ee6e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 VAERS/
-.ipynb_checkpoints/
\ No newline at end of file
+.ipynb_checkpoints/
+VAERSDataUseGuide_en_September2021.pdf
+Vaccine Lot Numbers Expiration (1).xlsx
diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index 92f219163a8..ab6161eba56 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -24,22 +24,16 @@
     "    def read_csv(file):\n",
     "        return pd.read_csv(file, index_col='VAERS_ID', encoding='latin1', low_memory=False)\n",
     "        \n",
-    "    def createPatients():\n",
-    "        return pd.concat(\n",
-    "            [\n",
-    "                read_csv(\"VAERS/2021VAERSData/2021VAERSDATA.csv\"),\n",
-    "                read_csv(\"VAERS/2022VAERSData/2022VAERSDATA.csv\")\n",
-    "            ])\n",
-    "\n",
-    "    def createVax():    \n",
-    "        return pd.concat(\n",
-    "            [\n",
-    "                read_csv(\"VAERS/2021VAERSData/2021VAERSVAX.csv\"),\n",
-    "                read_csv(\"VAERS/2022VAERSData/2022VAERSVAX.csv\")\n",
-    "            ])\n",
-    "\n",
-    "    df_patients_vax = pd.merge(createPatients(), createVax(), left_index=True, right_index=True)\n",
-    "    return df_patients_vax[(df_patients_vax[\"VAX_TYPE\"] == \"COVID19\") & (df_patients_vax[\"VAX_MANU\"] == manufacturer)]"
+    "    def createDataFrameForYear(year):\n",
+    "        folder = \"VAERS/\" + year + \"VAERSData/\"\n",
+    "        return pd.merge(\n",
+    "            read_csv(folder + year + \"VAERSDATA.csv\"),\n",
+    "            read_csv(folder + year + \"VAERSVAX.csv\"),\n",
+    "            left_index=True,\n",
+    "            right_index=True)\n",
+    "        \n",
+    "    df = pd.concat([createDataFrameForYear(\"2021\"), createDataFrameForYear(\"2022\")])\n",
+    "    return df[(df[\"VAX_TYPE\"] == \"COVID19\") & (df[\"VAX_MANU\"] == manufacturer)]"
    ]
   },
   {
@@ -96,7 +90,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "id": "fdf2ab4b",
+   "id": "bb7b2963",
    "metadata": {},
    "outputs": [],
    "source": [