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Revista chilena de infectología

versión impresa ISSN 0716-1018


MEDINA D., BÁRBARA; OLEA N., ANDREA  y  AGUILERA S., XIMENA. Epidemiology of hepatitis A in Chile. Rev. chil. infectol. [online]. 2003, vol.20, n.4, pp.262-267. ISSN 0716-1018.

Chile has a intermediate endemicity pattern of hepatitis A with a progressive displacement of age disease to adolescents and adults. Since 1975 to 2003 the relative importance of children under 10 year old has diminished in 35% but a 197% increase has been observed in 15 to 24 years age group. Epidemic cycles occur each 3 to 5 years reaching rates of 80 to 100 cases/100.000 inhabitants. During 2003 and to date of this document 8.263 cases have been reported with a national cumulative rate of 52,4 cases/100.000 and maximum in 5 to 9 years (194/100.000) and 10 to 14 years (157/100.000) age groups. Cases distribution is all along the country, most as community outbreaks and mainly in low income groups. Since year 2002 vaccination has replaced human immunoglobulin for close contacts prophylaxis. Nowadays education campaign has been reinforced trying to stop person to person transmission and sewage treatment plants have been built to finish with the environmental long cycle of transmission.

Palabras clave : Hepatitis A; National epidemiology; Endemic hepatitis A; Surveillance.

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