Analysis on the survey results of the population infection status of important parasitic diseases in Lufeng city in 2010

Objective To know about and grasp the population infection status of important parasitic diseases in Lufeng city and provide scientific basis for making the control countermeasures and evaluating the control effect. Methods The stool samples of permanent residents over 3 years old were collected and examined by modified Kato-Katz technique for the eggs of important parasites such as hookworm, ascaris and whipworm. At the meantime, children at 3-12 years old were examined for threadworm by cellophane swab method. Results 1 000 persons took stool examination in 5 survey sites,with 79 being found infected and mean infection rate of 7.9%,of which the infection rates of hookworm,ascaris, whipworm and threadworm were 2.6%,0.3%,4.9% and 0.2%,respectively. 970 children were examined for threadworm,with an infection rate of 12.6%.EPGs of hookworm,ascaris and whipworm infected persons were 24.2,120 and 25.7,respectively,and all were mild infection.The survey site with the highest infection rate by tool examination was Chengdong town (14.5%),and the site with the lowest infection rate was Beiyang town (5.0%). Difference between the infection rates in different survey sites was statistically significant(X2=15.86,P0.01). The highest infection rate for age groups was that of 50-60 years-old group and the lowest was that of over 60 years-old group.The highest infection rate for education levels was that of junior middle school level and difference between the infection rates in different education levels was not statistically significant(X2=5.55,P0.05). Conclusions The population infection status of important parasitic diseases in Lufeng city was at a lower level. The infection rates of ascaris and hookworm and the threadworm of children were apparently lower than the infection levels in the current-status survey of human important parasitic diseases of Guangdong province in 2001-2004.