Chen Hao-yung, head of the National Institute of Preventive Medicine's virology section, says that statistical analysis indicates that HIV-B, of North American origin, is most common in Taiwan, accounting for 67 % of all HIV infections. The second most common variety is the Southeast Asian HIV-E, which accounts for 23 % of all cases on the island. These two types of HIV are transmitted through sexual activity.
預防醫學研究所病毒組組長陳豪勇指出，根據病例分析結果，台灣以來自北美洲的 B 亞型最多（百分之六十七），其次是來自東南亞的 E 亞型（百分之二十三），而這兩種亞型多是經由性行為感染的。