A positive HIV antibody does not necessarily mean AIDS. A person with a positive HIV antibody needs further confirmatory testing, and if the confirmatory test is also positive, the diagnosis is AIDS. If the confirmatory test is negative, AIDS is not considered, and a positive HIV antibody in the initial screening is considered a false positive. Therefore, there are two steps in the screening for AIDS: the initial screening and the confirmatory test. Only people who have a positive confirmatory test are those who are clearly diagnosed with HIV infection. People who are diagnosed with HIV infection also do not necessarily need immediate antiviral treatment, but generally those in the acute and AIDS phases need timely antiviral treatment.