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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Hepatitis B (HBV), Hepatitis C (HCV) and Hepatitis Delta (HDV) Viruses in the Colombian Population-How Is the Epidemiological Situation?

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Alvarado-Mora, Monica Viviana [1] ; Gutierrez Fernandez, Maria Fernanda [2, 3] ; Gomes-Gouvea, Michele Soares [1] ; de Azevedo Neto, Raymundo Soares [4] ; Carrilho, Flair Jose [1] ; Rebello Pinho, Joao Renato [1]
Total Authors: 6
[1] Univ Sao Paulo, Sao Paulo Inst Trop Med, Lab Gastroenterol & Hepatol, Sao Paulo - Brazil
[2] Univ Sao Paulo, Sch Med, Dept Gastroenterol, Sao Paulo - Brazil
[3] Pontificia Javeriana Univ, Dept Microbiol, Virol Lab, Bogota - Colombia
[4] Univ Sao Paulo, Sch Med, Dept Pathol, Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: PLoS One; v. 6, n. 4 APR 29 2011.
Web of Science Citations: 24

Background: Viral hepatitis B, C and delta still remain a serious problem worldwide. In Colombia, data from 1980s described that HBV and HDV infection are important causes of hepatitis, but little is known about HCV infection. The aim of this study was to determine the currently frequency of HBV, HCV and HDV in four different Colombian regions. Methodology/Principal Findings: This study was conducted in 697 habitants from 4 Colombian departments: Amazonas, Choco, Magdalena and San Andres Islands. Epidemiological data were obtained from an interview applied to each individual aiming to evaluate risk factors related to HBV, HCV or HDV infections. All samples were tested for HBsAg, anti-HBc, anti-HBs and anti-HCV markers. Samples that were positive to HBsAg and/or anti-HBc were tested to anti-HDV. Concerning the geographical origin of the samples, the three HBV markers showed a statistically significant difference: HBsAg (p = 0.033) and anti-HBc (p < 0.001) were more frequent in Amazonas and Magdalena departments. Isolated anti-HBs (a marker of previous vaccination) frequencies were: Choco (53.26%), Amazonas (32.88%), Magdalena (17.0%) and San Andres (15.33%) p < 0.001. Prevalence of anti-HBc increased with age; HBsAg varied from 1.97 to 8.39% (p = 0.033). Amazonas department showed the highest frequency for anti-HCV marker (5.68%), while the lowest frequency was found in San Andres Island (0.66%). Anti-HDV was found in 9 (5.20%) out of 173 anti-HBc and/or HBsAg positive samples, 8 of them from the Amazonas region and 1 from them Magdalena department. Conclusions/Significance: In conclusion, HBV, HCV and HDV infections are detected throughout Colombia in frequency levels that would place some areas as hyperendemic for HBV, especially those found in Amazonas and Magdalena departments. Novel strategies to increase HBV immunization in the rural population and to strengthen HCV surveillance are reinforced by these results. (AU)