Prevalence of anti-hepatits A antibodies in children of different socioeconomic conditions in Vila Velha, ES

Abstract

This report describes the prevalence of anti-HAV antibodies in children from elementary school in the Municipality of Vila

Serological markers of hepatitis A, B and C viruses in rural communities of the semiarid Brazilian Northeast

“…In semiarid northeastern locations, especially smaller towns such as the village of Cavunge, environmental pollution is probably the main determinant of several fecal-oral transmission diseases. In this context, this population is different from other moredeveloped regions of the country, where HAV infection is observed in older individuals [23].…”

Seroprevalence of hepatitis A immunity among brazilian adult patients with liver cirrhosis: is HAV vaccination necessary?

“…3 In Brazil, a multicenter study found intermediate endemicities in the Southern and Southeastern regions (anti-HAV prevalence rates of 55.7%) and in the Northeastern region (76.5%) and high endemicity in the Northern region (92.8%). 4 In other studies performed in cities of Southeastern Brazil, the following seroprevalences of anti-HAV were observed: 32.1% in individuals aged between 1 and 23 years, in Rio de Janeiro, RJ; 5 38.6% in children aged between 4 and 14 years, in Vila Velha, ES; 6 and 54.2% in adolescents aged between 10.4 and 19.9 years, in São Paulo, SP. 7 Lower exposure to HAV in childhood causes adults to be vulnerable to such infection, when the disease has a higher morbidity.…”

Prevalence of antibodies against hepatitis A virus among the Kuikuro and Kaiabi Indians of Xingu National Park, Brazil

“…Other studies performed in the Southeastern region of Brazil have shown lower seroprevalence rates, especially when groups with higher socioeconomic status were analyzed 10,20,23 . By contrast, studies performed in the Northern region showed a 86.4% seroprevalence of hepatitis A among children from two to nine years (n = 487) 3 , and 90.9% in riverine children from 0 to 10 years old (n = 22) 16 .…”

“…Hepatitis A seroprevalence studies in Brazil have shown different rates according to the period when sera were collected, but also to the socioeconomic background of the communities analyzed 3,8,10,11,16,18,20,23 .…”