Investigation on contamination of Ascaris lumbricoides eggs in the different soil of three counties in Ganso Province
LI Fan, YANG Cheng-ming, CHEN Sheng-bang, YANG Jun-ke, LING Xiao-lan, HUA Hong-ling
Published 2009-07-28
Cite as Int J Med Parasit Dis, 2009,36(04): 204-206. DOI: 10.3760/cma.j.issn.1673-4122.2009.04.003
Abstract
Objective To investigate the different soil contamination of Ascaris lumbricoides eggs at liv-ing environments in rural areas. Methods Wushan County, Liangzhou District and Min County were select-ed as 3 pilots for investigation. Ten samples of soil including 4 different environments from Min County and 20 samples from the others were randomly collected. A. lumbricoides eggs in the different soil were floated with sat-urated nitrate and counted by microscopy. Positive rate of A. lumbricoides eggs in the soils was then calculated and A. lumbricoides infection rates of inhabitants at 3 pilots were compared and analysed. Results The over-all positive rate of A. lumbricoides eggs in the soils was 28%, and among them the rates at the vegetable gar-dens, lavatory surroundings, courtyards in the countryside and kitchens were 30% ,36% ,30% and 16%, re-spectively. Conclusion The pilots were badly contaminated by A. lumbricoides eggs. Measures should be taken to improve the living environments and decrease the infection rate of Ascaris in the residents.
Key words:
Ascaris lumbricoides eggs; Investigation; Soil
Contributor Information
LI Fan
Center for Disease Control and Prevention of Gansu Province, Lanzhou 730020, China
YANG Cheng-ming
Center for Disease Control and Prevention of Gansu Province, Lanzhou 730020, China
CHEN Sheng-bang
Center for Disease Control and Prevention of Gansu Province, Lanzhou 730020, China
YANG Jun-ke
Center for Disease Control and Prevention of Gansu Province, Lanzhou 730020, China
LING Xiao-lan
Center for Disease Control and Prevention of Washan County, Wushan 741300, China
HUA Hong-ling
Center for Disease Control and Prevention of Washan County, Wushan 741300, China