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KMID : 0360919640070080760
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Journal of the Korean Medical Association
1964 Volume.7 No. 8 p.760 ~ p.768
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EPEDEMIOLOGIC STUDIES ON EL TOR CHOLERA EPIDEMIC IN KYUNGPOOK PROVINCE OF KOREA
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îïÔ§Ðñ/Chun, Do Ki
ï÷î¤Ð¥/Ùþç´à´/ì°î¤Îú/ÑÑÌÝáú/ïËÑãòÒ/ÑÑÔàý÷/Chung, Jae Kyu/Moon, Young Suk/Lee, Jae Ku/Kim, Kyung Soo/Chung, Nak Chin/Kim, Doo Hi
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Abstract
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The El Tor cholera has occurred in epidemic form in Korea throughout the eastern coastal area. The first incidence was reported in port Pusan on the lith of September 1963 and the epidemics produced 493bacteriologically identified and i83 suspected patients. In Kyungpook province, the epidemic started on the22nd of September 1963 and it lasted for about a month.
The authors made study on the epidemiologic aspects of the epidemic which had occurred in Kyungpook province and the following results were obtained.
1. The first incidence in Kyungpook province was reported on the 22nd of September 1963 and the epidemic produced 210 patients consisting of 195 bacteriologically identified and 15 suspected.
2. The attack rate was 5.1 per million populationand the higher attack rates were observed among adult age groups. It was noted that the lower socioeconomic groups with poor standards of sanitary facilities were frequently attacked by the disease.
3. Fatality rate was 17.6%. Throughout the age groups, higher rates were observed in older people and younger children. The rate was higher among male than female. The higher rate was also observed among the patients in the beginning of epidemic than those in the later stage of it.
4. The fatality rate was higher among patients. who have no experience of vaccination than those vaccinated. No fatal case was found among the patients who were vaccinated 10 days prior to the onset of disease.
5. Only two per cent of total patients continued the excretion of vibrios from feces until 14 days from the beginning of the disease.
6. Contact carrier rates in El Tor infections showed vary between 3.6% and 33.8% which were at most parallel to the case incidence of patients. The carrier rates among different groups were: 3.6% inpatient¢¥s family and their surroundings, 3.7% infishermen, and 33.8% in the person who take care of patient.
7. Cholera vibrios were isolated from flies, latrine, waste water. subwater, fishes, sea water, ice and drinking water which were collected in the epidemic area
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