Genetic and phylogenetic analyses of HIV-1 corroborate the transmission link hypothesis.

Background: Phylogenetic and genetic analyses have proven a valuable tool to infer epidemiological links between human immunodeficiency virus type-1 (HIV-1) isolates. These methods were applied in the present report for studying the genetic relatedness of the viral strains involved in two episodes of suspected HIV-1 transmission.

Objectives: Provide any evidence that may help establish or refute the transmission link.