title: Migration patterns of HIV-1 subtype B virus in Northern Italy.
abstract: Gene flow analysis is used to identify the migration patterns of viruses within a geographical area and /or in different populations. 883 HIV-1 B subtype pol gene sequences were analyzed. The gene analysis among different geographical areas of the Bergamo district and from different transmission risk groups showed 25% of the observed gene flow was from people living in the north valleys to lowland and 40.5% from a heterosexual risk group to injecting drug users. Injecting drug users seem to be the central link, mercenary sex being the common route of transmission (and gene flow) between this group and both heterosexual and homosexual individuals.
authors: Department of Infectious, Parasitic and Immunomediated Diseases, National Institute of Health, Rome, Italy.
authors: Alessandra
authors: A
authors: Lo Presti
authors: Massimo
authors: M
authors: Ciccozzi
authors: Eleonora
authors: E
authors: Cella
authors: Marta
authors: M
authors: Giovanetti
authors: Gianguglielmo
authors: G
authors: Zehender
authors: Daniela
authors: D
authors: Valenti
authors: Nathalie
authors: N
authors: Iannotti
authors: Emanuele
authors: E
authors: Malfatto
authors: Claudia
authors: C
authors: Bernardini
authors: Franco
authors: F
authors: Maggiolo
authors: Annapaola
authors: A
authors: Callegaro
mesh_terms: D001727:Bisexuality / Q000706:statistics & numerical data; D016000:Cluster Analysis; D004279:DNA, Viral / Q000235:genetics*; D005260:Female; D051456:Gene Flow / Q000235:genetics*; D015750:Genes, gag / Q000235:genetics; D014644:Genetic Variation; D015658:HIV Infections / Q000453:epidemiology / Q000635:transmission / Q000821:virology*; D015497:HIV-1 / Q000235:genetics* / Q000302:isolation & purification; D020010:Heterosexuality / Q000706:statistics & numerical data; D018451:Homosexuality, Male / Q000706:statistics & numerical data; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008297:Male; D058974:Phylogeography; D015995:Prevalence; D018570:Risk Assessment; D017422:Sequence Analysis, DNA; D011477:Sex Work / Q000706:statistics & numerical data; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D015819:Substance Abuse, Intravenous / Q000150:complications*
chemical_list: D004279:DNA, Viral