title: [Hepatitis B and the human migratory movements in the State of Mato Grosso, Brazil].
abstract: Hepatitis B is the main cause of hepatic disease in the Amazon and a biggest problem for its public health. Outbreaks and high prevalence of hepatitis B markers have been reported among immigrants recently arrived in northmost part of the Brazilian State of Mato Grosso. The hepatitis B surface antigen subtypes analysis suggests that the immigrants brought the virus themselves. Likely environmental and behavioral factors have facilitated the hepatitis B spread among these immigrant communities. Recent data show that surveillance and vaccination of immigrants have decreased the incidence of hepatitis B in this region. The increasing number of hepatitis delta cases among hepatitis B carriers from the Northmost part of Mato Grosso State has been detected as a consequence of a increasing contact with neighbor States that present high prevalence of this coinfection.
authors.affiliation: Núcleo de Estudos de Doenças Infecciosas e Tropicais da Faculdade de Ciências Médicas da Universidade Federal de Mato Grosso, Cuiabá, MT. fsouto@terra.com.br
authors.forename: Francisco José Dutra
authors.initials: FJ
authors.lastname: Souto
mesh_terms: D001938:Brazil / Q000453:epidemiology; D006509:Hepatitis B / Q000453:epidemiology* / Q000635:transmission; D003699:Hepatitis D / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D015995:Prevalence; D014171:Transients and Migrants