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Hepatitis C virus infection in blood donors from the state of Puebla, Mexico

Francisca Sosa-Jurado14, Gerardo Santos-López2*, Belinda Guzmán-Flores1, Julia I Ruiz-Conde1, Daniel Meléndez-Mena3, Martín T Vargas-Maldonado1, Ygnacio Martínez-Laguna4, Laura Contreras-Mioni5, Verónica Vallejo-Ruiz2 and Julio Reyes-Leyva2*

Author Affiliations

1 Banco de Sangre, Hospital de Especialidades, Centro Médico Nacional Manuel Ávila Camacho, Instituto Mexicano del Seguro Social, Puebla, Puebla, Mexico

2 Laboratorio de Biología Molecular y Virología, Centro de Investigación Biomédica de Oriente, Instituto Mexicano del Seguro Social; Metepec, Puebla, Mexico

3 Clínica de Hepatitis, Servicio de Gastroenterología, Hospital de Especialidades, Centro Médico Nacional Manuel Ávila Camacho, Instituto Mexicano del Seguro Social, Puebla, Puebla, Mexico

4 Centro de Investigación en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Puebla, Mexico

5 Laboratorio Estatal de Salud Pública, Secretaria de Salud del Estado de Puebla, Puebla, Puebla, Mexico

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Virology Journal 2010, 7:18  doi:10.1186/1743-422X-7-18

Published: 25 January 2010

Abstract

Background

Worldwide, 130 million persons are estimated to be infected with HCV. Puebla is the Mexican state with the highest mortality due to hepatic cirrhosis. Therefore, it is imperative to obtain epidemiological data on HCV infection in asymptomatic people of this region. The objective of present study was to analyze the prevalence of antibodies and genotypes of hepatitis C virus (HCV) in blood donors from Puebla, Mexico.

Results

The overall prevalence was 0.84% (515/61553). Distribution by region was: North, 0.86% (54/6270); Southeast, 1.04% (75/7197); Southwest, 0.93% (36/3852); and Central, 0.79% (350/44234). Ninety-six donors were enrolled for detection and genotyping of virus, from which 37 (38.5%) were HCV-RNA positive. Detected subtypes were: 1a (40.5%), 1b (27.0%), mixed 1a/1b (18.9%), undetermined genotype 1 (5.4%), 2a (2.7%), 2b (2.7%), and mixed 1a/2a (2.7%). All recovered donors with S/CO > 39 were HCV-RNA positive (11/11) and presented elevated ALT; in donors with S/CO < 39 HCV-RNA, positivity was of 30.4%; and 70% had normal values of ALT. The main risk factors associated with HCV infection were blood transfusion and surgery.

Conclusions

HCV prevalence of donors in Puebla is similar to other Mexican states. The most prevalent genotype is 1, of which subtype 1a is the most frequent.