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J Med Virol. 2009 Apr;81(4):573-7. doi: 10.1002/jmv.21433.

High prevalence of non-B HIV-1 subtypes in seamen and their sexual partners in Croatia.

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1
Laboratory of Virology, Divisions of Infectious Diseases, Geneva University Hospitals, Geneva, Switzerland.

Abstract

Travel influences the spread of non-B subtypes of HIV in Europe. The aim of this study was to assess whether the spread of non-B subtypes occurred in Croatia, a country with a low level HIV infection. Phylogenetic analysis of the reverse transcriptase and protease genes was undertaken in 145 Croatian patients with the following risks for HIV-infection: men who have sex with men (n = 64), heterosexual contact (n = 54), intravenous drug use (n = 21), bisexual contact (n = 4) and intravenous drug use plus heterosexual exposure (n = 2). The sample included 25 seamen and 13 steady female sexual partners of seamen. Overall, 38 (26%) of HIV-patients were infected with non-B subtypes. Non-B subtype infections were found only in patients with a possible heterosexual exposure. Non-B infections were most frequent in seamen and their regular female partners (in 27 of 38 seamen and their partners, 71%). The relative distribution of non-B subtypes was as follows: A, 8%; C, 26%; F, 3%; CRF01_AE, 8%; CRF02_AG, 34%; CRF05_DF, 5%; CRF06_cpx, 3%; CRF10_CD 8%; and subtype U, 5%. There were altogether 19 heterosexual couples, phylogenetic analysis confirmed that the paired samples were related in all cases. Non-B subtypes were found only in individuals with a heterosexual risk, mainly in seamen and their partners.

PMID:
19235840
DOI:
10.1002/jmv.21433
[Indexed for MEDLINE]

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