The HumanImmunodeficiencyVirus (HIV) targets the immune system and weakens people's surveillance and defence systems against infections and some types of cancer.
人类免疫缺陷病毒(艾滋病毒)感染免疫系统，削弱人体对感染以及一些癌症的监视和防御系统。
2
To investigate the relationships between the prevalence of humanimmunodeficiencyvirus (HIV) infection and underlying structural factors of poverty and wealth in several African countries.
研究人类免疫缺陷病毒（HIV）感染的流行程度与一些非洲国家贫富状态的根本的结构性因素之间的关系。
3
Mortality trends were estimated separately for people with and without humanimmunodeficiencyvirus (HIV) infection in accordance with the International classification of diseases.