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Hepatitis A virus
Human Hepatitis A Virus
Infants
Brazil
Hepatitis A
Hepatitis A Antibodies
RNA, Viral
Hepatitis A Vaccines
Immunoglobulin M
Reverse Transcriptase Polymerase Chain Reaction
Sequence Analysis, DNA
Seroepidemiologic Studies
Polymerase Chain Reaction
Phylogeny
Molecular Sequence Data
Prevalence
Genotype
Child Day Care Centers
Saliva
Disease Outbreaks
Co-Publications
22
13
7
5
4
3
2
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