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In the present study, we evaluated the prevalence of occult hepatitis B (OBI) in a population from the Brazilian Amazon region, identify circulating genotypes, and mutations in the S gene. One hundred eighty‐one patients with negative serology for HBsAg and anti‐HBs and positive serology for anti‐HBc participated in the study. Detection of viral DNA, genotyping by sequencing, and analysis of nucleotide...
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