Warning: fopen(/home/virtual/parasitol/journal/upload/ip_log/ip_log_2025-12.txt): failed to open stream: Permission denied in /home/virtual/lib/view_data.php on line 83

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/virtual/lib/view_data.php on line 84
Ecology of filariasis on Che Ju Island
Skip to main navigation Skip to main content
  • KSPTM
  • E-Submission

PHD : Parasites, Hosts and Diseases

OPEN ACCESS
Search
Advanced Search
ABOUT
BROWSE ARTICLES
FOR CONTRIBUTORS

Articles

Page Path

Original Article

Ecology of filariasis on Che Ju Island

Kim, Joung Soon , Lee, Won Young , Chun, Suk Lak
Korean J Parasitol 1973;11(1):33-53.
Department of Epidemiology, School of Public Health, Seoul National University, Korea.
  • 5,370 Views
  • 51 Download
  • 9 Crossref
  • 0 Scopus
prev next

Full Article

Download PDF Download PDF

Abstract

Study of filariasis to determine important factors involved in its ecology was carried out on Che Ju Island for three consecutive years from 1968 to 1970 in seven villages, three coastal villages and four islets remote from the main island. One village which was located in mountainous area far from the coast was surveyed to serve as control area. About 90% of population inhabiting the study area had at least one blood smear during the three-year period; about one third had three blood smears, and a little over one third had two, and the rest only one examination. Animal and mosquito surveys were carried out at the same period. Followings are the results obtained: All human cases but several had microfilariae identical to the description of B. malayi. The several cases who had morphologically different microfilariae from that of B. malayi need further study for definite conclusion. Five persons randomly sampled from Mf positives and bled every two hours demonstrated nocturnal periodicity between 9 p.m. and 3 a.m. Human is considered to be only reservoir host for human filariasis in the area since animal survey and experimental exposure to the infective larvae of human filaria species showed failure to infect animals. Microfilaria rate, microfilaria density, prevalence of elephantiasis varied by area and age with correlation, which indicated cumulative process of the parasite by repeated exposure and development of host immunity to certain extent. Clinical manifestation of filariasis (symptom complex and elephantiasis ) taken from history and inspection was low in its prevalence with range of 0.9% 11.8% of total population. Only 5.2% of 517 Mf positives had the clinical manifestation. 24.8% of 109 persons with clinical manifestation had microfilaria; 42.9% with symptom complex only, 23.1% with both symptoms and elephantiasis, and none with elephantiasis only were microfilaria positive. Ae. togoi was the only species infected with the filaria. Mosquito infection rate by area showed positive correlation to the Mf rate and density of human population; where the Mf rate and density were high, the mosquito infection rate also high.

Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.

Format:

Include:

Ecology of filariasis on Che Ju Island
Korean J Parasitol. 1973;11(1):33-53.
DOI: https://doi.org/10.3347/kjp.1973.11.1.33
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.
Format:
Include:
Ecology of filariasis on Che Ju Island
Korean J Parasitol. 1973;11(1):33-53.
DOI: https://doi.org/10.3347/kjp.1973.11.1.33
Close
PHD : Parasites, Hosts and Diseases

ABOUT

BROWSE ARTICLES

EDITORIAL POLICIES

FOR CONTRIBUTORS

© The Korean Society for Parasitology and Tropical Medicine.