就医时，应向医事人员告知其已感染人类免疫缺乏病毒。
When under medical care, they shall inform medical personnel that they have been infected with HIV.
城市型黄热病：如果受感染的人把病毒带入人口稠密的地区，而这些地区有很多人缺乏免疫力，并有伊蚊生存繁殖，就会发生大流行。
Urban yellow fever: Large epidemics occur when infected people introduce the virus into densely populated areas with a high number of non-immune people and Aedes mosquitoes.
她推测到，这可能使他们对这种新的病毒产生一种免疫力，而年轻人则缺乏这种免疫。
That, she surmises, might give them an immunity to this new menace that young people lack.
因为大多数人都没有经常和猪接触，所以世界上的许多人都对此病毒缺乏免疫力。
Because most people do not have regular contact with pigs, much of the world's population may lack immunity against swine flu.
人类免疫力缺乏病毒（HIV）是一种感染人类免疫细胞，从而破坏人体免疫系统的反转病毒。
The human immunodeficiency virus (HIV) is a retrovirus that infects cells of the human immune system, destroying or impairing their function.
新的猪流感病毒是以往猪，禽和人流感病毒的混合体，人们对其缺乏天然免疫力。
Swine flu is a mix of pig, bird and human genes to which people have limited natural immunity.
人类花了三年时间才确认引起艾滋病的病毒——人体免疫缺乏症病毒，而解决是否将这一发现公诸于世的争议则花了更长的时间。
It took three years to conclusively identify H. I. V., the virus that causes AIDS, and longer to settle disputed claims for the discovery.
卫生官员最近才发现该男子的人类免疫力缺乏病毒(HIV)测试呈阳性，已通知420名女士，警告她们可能会染上艾滋病。
Health officials have only recently discovered the human immunodeficiency virus (HIV) testing positive, 420 had informed the President, warning they may be infected with AIDS.
该病毒导致的疾病为“获得性免疫缺乏综合症”，即艾滋病，自从1981年被承认以来，已经杀死了3900万人，并且每年还要继续杀死150万人。
The disease it causes, acquired immunodeficiency syndrome, or AIDS, has killed 39m people since it was recognised in 1981, and continues to kill about 1.5m people a year.
该病毒导致的疾病为“获得性免疫缺乏综合症”，即艾滋病，自从1981年被承认以来，已经杀死了3900万人，并且每年还要继续杀死150万人。
The disease it causes, acquired immunodeficiency syndrome, or AIDS, has killed 39m people since it was recognised in 1981, and continues to kill about 1.5m people a year.
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