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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
immunology and microbiology
Molecular epidemiology of hepatitis B virus in the United Republic of Tanzania
Journal of Medical Virology, Volume 78, No. 8, Year 2006
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Description
In the United Republic of Tanzania, 457 voluntary blood donors were enrolled in hepatitis B virus (HBV) serological screening; 4.8% (22/457) carried HBsAg, 13.6% (3/22) of whom were HBeAg-positive. The mean age among HBeAg-negative carriers was 31 years, HBV DNA was detectable in 81.8% (18/22), the mean level was 3.67 (±1.77) log copies/ml. Genotype A was determined in 90.9% (20/22) and 18/20 were classified into subgenotype Aa (Asia/Africa), The basal core promoter, precore and partial core nucleotide sequences were analyzed in the 18 strains; T1809/T1812 ("Kozak" sequence) and A/T1888 (encapsidation signal) variants were identified in 100% and 78%, respectively. The complete genome sequencing for one of the Tanzanian strains revealed no recombination. In conclusion, HBV seroprevalence is high among general population in Tanzania, and the HBV/Aa-infection is predominant. The indicated tendency to early HBeAg seroconversion and declining of the viral load should be confirmed further in case-control studies. © 2006 Wiley-Liss, Inc.
Authors & Co-Authors
Hasegawa, Izumi
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Tanaka, Yasuhito
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Kurbanov, F.
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Yoshihara, Namiko
Japan, Tokyo
National Institute of Infectious Diseases
El-Gohary, Ahmed M.
Egypt, Ismailia
Faculty of Medicine
Lyamuya, Eligius Francis
Tanzania, Dar es Salaam
Muhimbili University of Health and Allied Sciences
Matee, Mecky Isaac N.
Tanzania, Dar es Salaam
Muhimbili University of Health and Allied Sciences
Magessa, Pius M.
Tanzania, Dar es Salaam
Muhimbili University of Health and Allied Sciences
Fujiwara, Kei
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Ozasa, Atsushi
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Sugauchi, Fuminaka
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Orito, Etsurou
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Ueda, Ryuzo
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Mizokami, Masashi
Japan, Nagoya
Nagoya City University Graduate School of Medical Sciences
Statistics
Citations: 28
Authors: 14
Affiliations: 4
Identifiers
Doi:
10.1002/jmv.20659
ISSN:
01466615
e-ISSN:
10969071
Research Areas
Genetics And Genomics
Infectious Diseases
Study Design
Cross Sectional Study
Case-Control Study
Study Locations
Tanzania