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https://www.arca.fiocruz.br/handle/icict/1275
TRENDS IN HCV PREVALENCE, RISK FACTORS AND DISTRIBUTION OF VIRAL GENOTYPES IN INJECTING DRUG USERS: FINDINGS FROM TWO CROSS-SECTIONAL STUDIES
infectious disease epidemiology
injecting drug use
molecular epidemiology
Autor(es)
Afiliação
National Reference Laboratory for Viral Hepatitis and National Reference Laboratory for Influenza and Exanthematic Diseases, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
Center for Drug Abuse Treatment and Research (NEPAD), State University of Rio de Janeiro, Rio de Janeiro, Brazil
Laboratory of Leprosy, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
Department of Health Information, Center for Information on Science and Technology, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
Center for Drug Abuse Treatment and Research (NEPAD), State University of Rio de Janeiro, Rio de Janeiro, Brazil
Laboratory of Leprosy, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
National Reference Laboratory for Viral Hepatitis, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
Department of Health Information, Center for Information on Science and Technology, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
Resumo em Inglês
In the last decade, a declining prevalence of HCV infection has been described in injecting drug
users (IDUs) in different countries. This study is the first to assess temporal trends in druginjecting
patterns, HCV infection rates and viral genotype distribution in 770 Brazilian IDUs,
recruited by two cross-sectional studies (1994–1997 and 1999–2001). A substantial decline in the
prevalence of HCV infection was found over the years (75% in 1994 vs. 20 . 6% in 2001,
P<0.001) that may be a consequence of the significant reduction in the overall frequencies of
drug injection and needle-sharing, as well as the participation of IDUs in initiatives aimed at
reducing drug-related harm. No trend was found in terms of viral genotype distribution. Despite
the favourable scenario, preventive measures must be maintained, especially in vulnerable
subgroups such as young or new injectors, where risky behaviours through direct and indirect
sharing practices remain common.
Palavras-chave em inglês
Hepatitis Cinfectious disease epidemiology
injecting drug use
molecular epidemiology
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