Five cases of hepatitis B and D superinfection in teenagers from the northernmost region of Mato Grosso State are reported. Hepatitis B is high prevalent there, but not hepatitis D. The proximity to the States of Acre and Amazonas and intense migration may be introducing the virus into the region. Necessity for the surveillance of hepatitis D in northern Mato Grosso is emphasized.
Hepatitis B; Hepatitis D; Hepatitis delta; Amazon; Mato Grosso; Cirrhosis
