2006
DOI: 10.1590/s0036-46652006000100009
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Abstract: SUMMARYThe prevalence of hepatitis A virus (HAV) antibodies was assessed in adolescents (age ranging from 10.4 to 19.9 years) at an Adolescent Outpatient Clinic in São Paulo, Brazil. Anti-HAV was detected in 137 (54.2%) out of 253 individuals. When separated into two age groups, anti-HAV frequency was higher in the 15 to 19 year-old group (64%) in comparison to the 10 to 14 year-old group (46%) (Chi-square test: p = 0.004). These results suggest that adolescents in São Paulo are at risk of hepatitis A infectio… Show more

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Cited by 12 publications
(10 citation statements)
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References 11 publications
(12 reference statements)
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“…This 29,30 . Results are also in agreement with those described in the population-based survey conducted in Brazilian capital cities 16 , in which the Southeast region of Brazil was found to be a low endemic area for hepatitis A.…”
Section: Discussionmentioning
confidence: 91%
“…This 29,30 . Results are also in agreement with those described in the population-based survey conducted in Brazilian capital cities 16 , in which the Southeast region of Brazil was found to be a low endemic area for hepatitis A.…”
Section: Discussionmentioning
confidence: 91%
“…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. The case-fatality rate for fulminant HA is 1.8% among adults older than 50 years.…”
Section: Introductionmentioning
confidence: 99%
“…All these diagnostic criteria should be present in a patient with an active viral infection to confirm the diagnosis of VAHS 15,17 . Hemophagocytic syndrome associated with hepatitis A virus infection is rarely described, despite the high incidence of this infection in the population in general 4,7,9,32,33,42,47 . There are only 12 cases reported in the medical literature.…”
Section: Introductionmentioning
confidence: 99%