Other diseases which were once thought to be thoroughly under control but which have begun to stage a comeback, such as pulmonary tuberculosis, dengue fever and malaria, are described as "re-emergent" diseases. Tuberculosis, for example, began its current resurgence in the mid-1980s, while indigenous dengue fever wreaked havoc in southern Taiwan in the summer of 1996, and has subsequently spread to the north of the island.
除了此起彼落的新興怪病外，一些過去已被明顯控制的傳染病，如今又有「老病新生」再度增加的趨勢，例如：肺結核、登革熱、瘧疾，即所謂的「再現傳染病」。八○年代中期「白色瘟疫」結核病開始死灰復燃；九六年夏曾肆虐台灣的本土性登革熱，更已跨越濁水溪遍佈全台。