Recent Patterns of Intestinal Helminth Infections among the Residents in Taegu City, Korea

대구시민들에 있어서 장내회충류의 최근 감염상

In order to estimate the recent patterns of intestinal helminth infections among the residents in Taegu City, Korea, a survey based on discovery of helminth eggs by formalin-ether sedimentation and modified Graham's scotchtape anal swab techniques, were performed during the period from March to September in 1983. A total of 1, 697 fecal specimens were collected from 854 male and 843 female residents from 5 village (Dong), each of whom were selected randomly to represent 1, 000 persons referred to the census in 1982. Among the specimens examined, one or more species of helminth parasites were found in 473, revealing the overall positive rate of 27.9 per cent. Of them, Trichuris trichiura was found most frequently, in 13.2 percent, followed by Enterobius vermicularis in 7.0 per cen t. Hookworm was the least prevalent. The sex-specific rate of overall helminth infections was a little higher in females than in males, while in cases of Clonorchis sinensis, Metagonimus yokogawai and Taenia species, the infection rates in males was higher than in females. T. trichiura was most prevalent in the 20~29 age group and showed about the same prevalence in males and females of all age groups. C. sinensis infection rate increased with age while those of Ascaris lumbricoides decreased. Single infections were 82.5 per cent of all positive cases. Of these, T. trichiura revealed the highest prevalence in 31.7 per cent, followed by E. vermiculasis in 20.1 per cent and A. lumbricoides in 14.8 per cent. Of the double infections, the percentage of T. trichiura in combination with other intestinal helminths was higher than that of A. lumbricoides. It was concluded that although the infection rates of intestinal helminths among the residents in Taegu City, Korea is still high, eradication of these parasitic diseases seems to be possible with twice-a-year administration of specific anthelmintics, in combination with extensive public health education and improvement of the dietary life.

대구시민들에 있어서 장내 기생광충류의 최근 감염상을 알아보기 위해 1983연 3월부터 9월까지 대구시내 5개동(남구 봉덕동, 북구 노원동, 서구 비산동, 동구 신암동 및 수성구 수성동)주민를 조사 대상으로 선정하여 formalinether 집란법 및 scotch-tape 항문주위도말법으로 광충류 충란 검사를 실시하였다. 총 피검자 1,697명중 장내접충류 감염률은 27.9%이었으며, 이중 편충이 13.2%로 가장 높았고, 그 다음은 7.0%를 나타내는 요충이었으며, 구충은 0.:1로 가장 낮았다. 성별 감염률에 있어서 남자의 경우 간흡충, 요꼬가와흡충, 조충등은 여자에 비해서 그 율이 다소 높았으나, 편충의 경우에는 양자간에 유의적 차를 인정할 수 없었다. 연령군별 감염률에 있어서는 편충은 20∼29세군에서 남자 17.5%. 여자 17.6%로 가장 높았으며, 0∼9세군에서는 남자 5.5%, 여자 9.6%로 가장 낮았다. 간흡충은 30∼39세군에서 가장 높았으며 요꼬가와흡충도 간흡충과 비슷한 양상을 나타내었다. 혼합기생상에 있어서는 1종기생이 가장 많았고 다음은 2종의 중복기생이었으며, 3종의 혼합기생은 매우 적었다. 이상의 성적으로 미루어 보아 대구직할시 주민들에서의 장내 기생 윤충류 감염은 아직도 고율임을 알 수 있었다.