2,000 Dead from Influenza: Looking back at the history of epidemic illnesses, in the era when medicines were still undeveloped and public hygiene was poor, all kinds of diseases spread by bacteria or virus posed an enormous threat to human life.
回顧流行病史，在醫藥不發達、衛生環境不良的時代，各種細菌、病毒造成的傳染病，對人類性命危害極鉅。