Teng Hwa-jen of the National Institute of Preventive Medicine's medical entomology section says that dengue fever used to occur only sporadically in Taiwan, but the trend in recent years seems to be for it to become a cyclical endemic disease.
預防醫學研究所病媒昆蟲組副研究員鄧華真指出，登革熱在台灣原為偶發性的傳染病，但近年似乎有演變為地方性周期流行的趨勢。