HCV Infection in Northeastern Brazil: unexpected high prevalence of genotype 3a and absence of African genotypes
Arq. gastroenterol
;
37(4): 213-6, out.-dez. 2000. graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-286402
ABSTRACT
The genomic diversity of HCV embraces 6 genoptypes and at least 52 subtypes with clinical and epidemiological correlations. There is a paucity of studiens assessing HCV genotypes and biomolecular epidemiology in Brazil. We studied genotypes distribution and epidemiological aspects in 232 HCV carriers, 133 ( 57,9 per cent) males and 99 (42,1 per cent) females, followed in the liver disease referral unit in Salvador, BA, northeastern Brazil. All of them were anti-HCV positive by 3rd generation ELISA assay, and HCV infection showed that 93 (40 per cent) had past blood transfusion, 14 (6 per cent) intravenous drug use, 19 (8 per cent) inhalation of cocaine, 28 (12 per cent) tattooing, 15 (7 per cent) were health care workers, 5 (2 per cent) had reused disposable syringes, 5 (2 per cent) had multiple risk factors and in 53 (23 per cent) no risk factor was determined.Genotypes 1a was observed in 75 (32 per cent), 1b in 72 (31 per cent), 3a in 61 (26 per cent), 2b in 14 (6 per cent): 5 (2.5 per cent) had mixed genotypes and 5 (2.5 per cent) were undetermined. Patients with genotype 1 had a higher mean age (P<0.05) and no particular risk factors were associated with a specific genotype. Genotype 1 largely predominates in northeast Brazil followed by genotype 3 which, in this population, does not seem to be related to intravenous drug abuse, in contrast to some European studies. Although 80 porcentage of the Salvador population comprise African-Brazilians, no Africa genotype was identified, which way mean that HCV was introduced into this region via European immigration. This study demonstrated some peculiarities of HCV epidemiology in Brazil and strongly suggests that HCV introduction to this region was probably related to European immigration.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Hepatite C
/
Hepacivirus
/
População Negra
Tipo de estudo:
Estudo de etiologia
/
Estudo de prevalência
/
Estudo prognóstico
/
Fatores de risco
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Arq. gastroenterol
Assunto da revista:
Gastroenterologia
Ano de publicação:
2000
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
França
Instituição/País de afiliação:
I.N.S.E.R.M/FR
/
University Hospital of Bahia/BR
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