Cholera in Bahrain: epidemiological characteristics of an outbreak.

摘要: Abstract In the period 10 August 1978-23 January 1979, 913 culture-confirmed cases of cholera caused by Vibrio cholerae, biotype El Tor, serotype Ogawa, occurred in Bahrain. After discovery initial cases, others sporadically, and incidence reached a peak 25-35 per day during seventh week outbreak (16-22 September). The overall attack rate (27 000) was low subsided without mass immunization campaigns or rigorous border control persons imports. Investigation 746 that August—13 October 1978, showed throughout most areas country mainly affected infants, young children, adult working-age males. Symptoms were very mild; fewer than 20% patients required specific rehydration therapy. highest (84 infants less 1 year age. No common vehicle mode transmission identified. A matched-pair study 35 controls more likely to have consumed food beverage outside home before becoming ill. V. cholerae isolated from stored drinking water houses 8 but not numerous samples tap-water. It presumed through complex interaction mild asymptomatically infected with food, water, environment.