Varicella outbreak in the Capela do Socorro, 2005

Abstract

The varicella disease is caused by a varicella-zoster virus. The varicella is extremely transmissible, being transmitted from person to person, its greater risk is on closed ambient as foundling-hospitals, class rooms and sick-rooms. The vaccine is insure and immune to children, healthy adults and in free compromising patients it shows good tolerability with few collateral reactions having an efficacy of 80%. The goal of this work has being to analyze the varicella outbreak occurred in 2005 at Capela do Socorro region. The study done was transversal, through outbreak data ocurred in foundlings during the year of 2005 in the region Capela do Socorro Health Vigillancy Supervising (SUVIS). In the present study, 36 establishments have been analysed, having at least one varicella outbreak and showing a totalof 617 cases out of a group of 6845 members, with an attack tax of 9,01%. The data obtained has shown predominance on an age of 1-4 years (x2=195.50) in the winter months (61,11% of the outbreak) and a major outbreak numbers on near institutions to Veleiros, Republica and Mirna, respectively. The CEI José Molina has been the one that presented major attack tax (38,46%). Due to the great transmissibility of varicella and to the extreme rapidity that it can be disseminated in confined ambients as foundlings, is the reason of the importance of a study related to the foundlings as those of the Capela do Socorro.