Abstract
Serology is an useful tool in the diagnosis of Bartonella spp. infections in human immunodeficiency virus (HIV) seronegative patients. The value of this technique in HIV co-infected individuals is unknown. The aim of this study was to assess the prevalence of Bartonella spp. seropositivity among intravenous drugs abusers (IDA), both HIV-infected and non-infected. A retrospective seroepidemiological study was carried out among 241 IDA. One hundred and forty-seven of them were infected with HIV type 1. The titer of serum IgG antibodies against Bartonella spp. were determined. Thirty-three (14%) individuals were seropositive for Bartonella spp. Nineteen (13%) seropositive cases were found among HIV carriers and 14 (15%) among HIV uninfected people. No relationship between Bartonella spp. seropositivity and the CD4+ cell counts was found when HIV infected patients were analyzed. We have found a similar prevalence of Bartonella spp. seropositivity in HIV-infected and non HIV-infected IDA.
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