title: Possible protective effect of HIV-2 against incident HIV-1 infection: review of available epidemiological and in vitro data.
authors.forename: A E
authors.initials: AE
authors.lastname: Greenberg
mesh_terms: D007560:Cote d'Ivoire / Q000453:epidemiology; D003627:Data Interpretation, Statistical; D005714:Gambia / Q000453:epidemiology; D006169:Guinea-Bissau / Q000453:epidemiology; D015658:HIV Infections / Q000453:epidemiology / Q000821:virology*; D015497:HIV-1 / Q000235:genetics / Q000502:physiology*; D015498:HIV-2 / Q000235:genetics / Q000502:physiology*; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D025202:Molecular Diagnostic Techniques; D012196:Review Literature as Topic; D019562:Viral Load