Studies on the Carriers of El Tor Cholera

Abstract

1. During the summer of 1962, an epidemic of El Tor cholera broke out in Taiwan. studies on the carrier of Vibrio El Tor were carried out in the north part of the island around the 6 patients.
2. Carriers of El Tor vibrio were always detected from the neighbors of the patients. The highest carrier rate was 11.43±3.80%, the lowest being 0-0.98±0.54%. The duration.of Vibrio's excretion was between 2 and 12 days, 4.3±3.0 days on an average.
3. Among 14 carriers, 7 were vaccinated 3 times, 17 days prior to the investigation at 7 days interval.
4. Four of the carriers showed intermittent excretion of Vibrio, and one showed excretion of Vibrio during incubation, namely the state of incubatory carriers.
5. Among the 14 carriers, there were 6 children under 13 years old, as were children often detected as carriers.