Because of progress in medical technology, and the spread of an understanding of hygiene, a number of epidemic diseases caused by bacteria or microbes have gradually disappeared. Past diseases such as intestinal infections or pneumonia, with high death rates or high incidence, have gradually passed from the stage.
由於醫療科技的進步及衛生觀念的普及，台灣光復初期許多因為細菌、微生物造成的急性傳染病已逐漸匿跡；過去在高死亡率與高罹患率名單上的腸胃道感染、肺炎、霍亂、砂眼……，早已紛紛鞠躬退位。