摘要：Summary. HIV/AIDS surveillance data indicate that, in 2008, approximately one-fourth of all HIV
infections in adults remain undiagnosed in Italy and that close to 60% of AIDS diagnosed individuals
discovered their seropositivity at the diagnosis of AIDS. Late diagnosis of HIV infection is associated
with increased mortality and morbidity and increased cost to healthcare services. From a
public health perspective, knowledge of HIV status is associated with a reduction in risk behaviour.
Thus, a routine screening for HIV infection is important for both a better prognostic outcome, and
control of HIV spreading in the population. In Italy there are not shared guidelines for the laboratory
diagnosis. In this paper, we suggest two algorithms that can be adopted for the diagnosis of
HIV infection in individuals undergoing HIV testing.
