Hepatitis A is contracted through food and drink, and more than 20 years ago, when eating habits and hygiene standards were poor, 99 % of adults in Taiwan had hepatitis A antibodies (meaning they had contracted the disease but recovered fully). It can be said that practically everyone had "hit the jackpot."
經由食物或飲水傳染的 A 型肝炎，在個人飲食習慣和衛生條件較差的二十多年前，99％的台灣成年人體內都有 A 型肝炎抗體（表示曾經感染而已痊癒），可以說幾乎是人人都「中過獎」。