The clinical course of infections with the hepatitis B virus (HBV) substantially varies between
individuals, as a consequence of a complex interplay between viral, host, environmental and …

Approximately 2 billion people worldwide are infected with HBV, and 350 million people are
chronic carriers. HBV is classified into nine genotypes (A to I). Genotype F is the most …

Background HBV subgenotype A1 is the dominant genotype A strain in Africa, with
molecular characteristics differentiating it from A2, which prevails elsewhere. Outside Africa …

Hepatitis delta virus (HDV) is widely distributed and associated with fulminant hepatitis
epidemics in areas with high prevalence of HBV. Several studies performed in the 1980s …

The natural history of hepatitis B virus infection is not uniform and affected from several
factors including, HBV genotype. Genotype D is a widely distributed genotype. Among …

Hepatitis Delta virus (HDV) is endemic worldwide, but its prevalence varies in different
geographical areas. While in the Brazilian Amazon, HDV is known to be endemic and to …

Brazil is a country of low hepatitis B virus (HBV) endemicity in which the genotype A of HBV
(HBV/A) is the most prevalent. The complete nucleotide sequences of 26 HBV/A isolates …

Ten Hepatitis B virus (HBV) genotypes, as well as numerous subgenotypes, have been
described in well-characterized ethnogeographical populations. Martinique has been at a …

Southern Brazil is considered an area of low Hepatitis B endemicity, but some areas of
higher endemicity have been described in the Southwest of Paraná and Santa Catarina …

The hepatitis delta virus (HDV) is a hepatotropic subvirus that is dependent on the hepatitis
B virus (HBV) and supplies the viral envelope containing the surface antigen of hepatitis B …