Task: Translation
Input (Japanese): 彼の選挙運動当局の言葉を借りれば、これらの徴候は”通常食品では見つからない重篤なウイルス感染と化学物質”によるものと言われていた。
Output (English): These symptoms were said to be due to "a serious viral infection and chemical substances which are not normally found in food products" as his campaign officials put it.