[A Survey On The Prevalence Of Intestinal Protozoan Cysts In Jeonlanam Do, Korea]
A survey on the prevalence of intestinal protozoan cysts was conductcd in Jeonlanam Do (Province), Korea in 1981. A total of 4,116 specimens was collected from 2,035 male and 2,086 female inhabitants in 4 urban and 7 rural areas. Each case was selected randomly to represent 1,000 inhabitants referred to the census in 1980. Formalin-Ether sedimentation technique was employed to concentrate the cysts and one Lugol's iodine stained smear was examined for each case. The results were summarized as follows: 1. The cases who passed out protozoan cysts of any kind were 9.1 % out of total 4,116 examined, and cumulative positive rate was 11.0 %. Among the positive cases, 16.5 % were infected by two or more species of protozoa. 2. Total 5 species of cysts were detected and the positive rates were as follows; Entamoeba histolytica 1.4 %, E. Coli, 4.9 %, Endolimax nana 2.5 %, Iodamoeba butschlii 0.4 % and Giardia lamblia 1.9 %. 3. The cyst positive rates varied greatly by the surveyed area. The positive rate in rural area was 11.6 % compared with 5.7 % in urban area. The highest rate was found 14.5 % in Gurye Gun (County) and the lowest 3.6 % in Mogpo Si (City). 4. Female showed much higher positive rate than male as 11.8 % compared with 6.4 % and the cumulative rate 14.2 % and 7.6 % respectively. By age group, the rate was highest as 13.9 % in 40~49 years and next 12.5 % in over 60 years group. The cyst prevalence rate diminished remarkably in Jeonlanam Do compared to previous records. However, the finding that 20.2 % of females of 40 years were the carrier of protozoan cysts was an important information in public health point of view.
Hong
Sung Jong
SJ
Department of Parasitology and Institute of Endemic Diseases, College of Medicine, Seoul National University, Korea.
Hong
Sung Tae
ST
Chai
Jong Yil
JY
Lee
Soon Hyung
SH
Seo
Byong Seol
BS
Cho
Syong Hwan
SH
Han
In Soo
IS