When was the first case of AIDS clinically confirmed,and how?
When was the first case of AIDS clinically confirmed,and how?
发布时间：2025-08-16 08:31:59
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答案：AIDS was first clinically observed in 1981 in the United States(U.S.). The initial cases were a cluster of injecting drug users and homosexual men with no known cause of impaired immunity who showed symptoms of Pneumocystis carinii pneumonia(PCP),a rare opportunistic infection that was known to occur in people with very compromised immune systems. Soon thereafter, an unexpected number of gay men developed a previously rare skin cancer called Kaposi's sarcoma(KS). Many more cases of PCP and KS emerged, alerting U.S. Centers for Disease Control(CDC) and Prevention and a CDC task force was formed to monitor the outbreak.By September 1982 the CDC started referring to the disease as AIDS.
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