Population-Based Multicentric Survey of Hepatitis B Infection and Risk Factors in the North, South, and Southeast Regions of Brazil, 10-20 Years After the Beginning of Vaccination.
A population-based hepatitis survey was carried out to estimate the prevalence of hepatitis B virus (HBV) infection and its predictive factors for the state capitals from the north, south, and southeast regions of Brazil. A multistage cluster sampling was used to select, successively, census tracts, blocks, households, and residents in the age group 10-69 years in each state capital. The prevalence of hepatitis B surface antigen (HBsAg) was lower than 1% in the north, southeast, and south regions. Socioeconomic condition was associated with HBV infection in north and south regions. Variables related to the blood route transmission were associated with HBV infection only in the south whereas those related to sexual behavior were associated with HBV infection in the north and south regions. Drug use was associated in all regions, but the type of drug differed. The findings presented herein highlight the diversity of the potential transmission routes for hepatitis B transmission in Brazil. In one hand, it reinforces the importance of national control strategies of large impact already in course (immunization of infants, adolescents, and adults up to 49 years of age and blood supply screening). On the other hand, it shows that there is still room for further control measures targeted to different groups within each region.
Ricardo A A
RAA
Ximenes
Gerusa M
GM
Figueiredo
Maria Regina A
MRA
Cardoso
Airton T
AT
Stein
Regina C
RC
Moreira
Gabriela
G
Coral
Deborah
D
Crespo
Alex A
AA
Dos Santos
Ulisses R
UR
Montarroyos
Maria Cynthia
MC
Braga
Leila M M B
LMMB
Pereira
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D002648:Child; D005260:Female; D006306:Health Surveys; D006509:Hepatitis B / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control / Q000635:transmission; D006514:Hepatitis B Surface Antigens / Q000097:blood; D017325:Hepatitis B Vaccines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D015229:Sexually Transmitted Diseases, Viral / Q000453:epidemiology; D012959:Socioeconomic Factors; D015819:Substance Abuse, Intravenous / Q000150:complications; D055815:Young Adult
D006514:Hepatitis B Surface Antigens; D017325:Hepatitis B Vaccines