However, he cautions that for every person on treatment, another two become newly infected with HIV.

然而，他警告说，在每一个人获得治疗的同时，就有两个新感染艾滋病病毒的人。

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When a person is infected with HIV, the virus slowly begins to destroy that person's immune system.

当一个人感染了HIV，病毒就慢慢的开始破坏这个人的免疫系统。

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HIV infection is not spread by casual contact such as hugging, by touching items previously touched by a person infected with the virus, during participation in sports, or by mosquitoes.

一些日常接触不会感染HIV，例如拥抱，触摸被感染者接触过的物品，共用体育器械或者蚊虫叮咬。

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According to the World Health Organization it can take a person infected with HIV 10 to 15 years to develop AIDS. Effective treatment with antiretroviral drug, however, is delaying the development of AIDS and allowing people to live longer, healthier lives.

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