An epidemiological investigation conducted by the authors during the period from 24 September to 14 October 1963 towards 90 cholera patients (87 households) against the control group consisting of 11,482 persons or 2,239 hooseholds in the vicinity wi...
An epidemiological investigation conducted by the authors during the period from 24 September to 14 October 1963 towards 90 cholera patients (87 households) against the control group consisting of 11,482 persons or 2,239 hooseholds in the vicinity with particular attention paid to the status of environmental sanitation, points to the following conclusion:
1. The route of invasion is believed to be through the inapparent cases or carriers among the inmates of vessels from contaminated areas.
2. No significant difference was observed with the incidence rates by different age groups, the average age being 31.13 years.
3. No significant difference could be noticed with incidence rates by sexes.
4. Primary school graduates or those under this educational level constitute majority of the cholera cases.
5. Those who believe in Taeguk-do Religion and Buddhism constitute 12.7% respectively of the total cholera cases, followed in order by Christianity 8.0% and others 1.1%. It seems characteristic that those who believe in Taeguk-do supersede any others in number.
6. Occupational composition: Those without jobs make up 31.2%(those under school age are excluded), or the top, followed by laborers and those engaged in other occupations.
7. Houses of wooden and oil paper structure top (46.1%) all the other types of construction. Average floor space is estimated at 5.3 pyung, indicative of an extremely low income stratum. Number of rooms occupied by households average 1.7, while the occupants per household average 6.7 and number of the inmates per room 3.8.
8.Wells are shared by 57.5% of the cholera victims, which can be converted to an average of 59.0 households per well. Toilets are shared by 50.6% Average distance between wells and toilets is 11.8m. Many (32.5%) of the cases do not possess kitchens, which 62.1% possess no sewage system. Many(32.3%) do not take any measures against files, in sharp contrast with the "control" group.
9.Newspapers have been subscribes to by 80.5% of the patients households while 74.7% are without radios.
10.Secondary attack rate is 0.6%.
11.The rate of carriers among the patient's families and neighbors seems to be decreasing with the lapse of the time(27 September though 3 October 1963). This rate is highest among the fish peddlers.
12.Contamination of vectors has turned out to be positive only with files. The rate: 23.0% within the asylum for patients and 4.7% within the patients houses.