Cholera carrier studies in Calcutta in 1966-67.

摘要: Cholera carrier studies have been in progress Calcutta since April 1966, areas of high endemicity with a population about 13 000. Carriers are traced through periodic examinations samples from latrines, users vibrio-positive contacts cases cholera and apparently healthy persons. The latrine survey showed that 46.2% the latrines were infected, brought 54 carriers to light; over-all rate study area was estimated as 1.3%. The among household family hospital 1.6%. None 9 persons choleraic diarrhoea positive. Vibrios also isolated water flies near positive latrines. The results indicate can occur even absence overt disease, infection persists many households, may transmit infection.