The domain epidemic strains in the area were mainly from HIV 1 American European strain, B subtype of Thailand strain and their derivative strains.

• 这一结果提示，在进化上云南瑞丽HIV?1流行毒株间有非常密切的关系，在这一时期该地区的流行毒株以HIV?1美欧株、泰国株B亚群及其衍生株为主。