ABSTRACT
Objective To understand the potential risk for schistosomiasis transmission caused by introduction of infection source from mobile population in Shanghai. Methods Field investigation was conducted in the suburb of Shanghai City by screening the mobile population living in Shanghai for more than 1 month and over 1 years old in a procedure of interviewing, serum indirect hemagglutination (IHA) test, and then fecal examination to detect the eggs with nylon sedimentation approach for those IHA positives. Results Among 2 931 mobile people investigated, 1 575 were male (53.74%) and 1 356 were female(46.26%); 138 out of 2 931 were positive in IHA test (4.71%). 1 938 (66.12%) out of 2 931 came from Schistosoma japonicum-endemic provinces and its positive rate in mobile population (5.99%) was significantly higher than those from the transmission-interrupted provinces (2.6%) (?2=10.28, P
ABSTRACT
Objective To evaluate the current status of intestinal nematode infection in Shanghai and make recommendations for further control activities Methods Retrospective review of the control program was made based on the change of nematode prevalence in Shanghai area since the 1950s, and challenges under the current situation were analysed. Results The intervention measures included chemotherapy, health education, sanitary disposal of human excreta and safe water supply. With the control strategy, socio\|economical development and the change of farming patterns, the prevalence of intestinal nematode infection in population was reduced by 88^5%, from 62^6% in 1955 to 8^2% in 2000. Among them, ascaris infection decreased by 89^0%, from 52^1% to 6^3%, hookworm infection decreased by 99^0%, from 12^9% to 0^1%, but pinworm infection was still as high as 18^9% in 1999. Conclusion Prevalence of nematode infection in Shanghai was considerably reduced. To match it with the current socio\|economical development in the Municipality, however, more needs to be done. Sustainable control activities and surveillance are recommended.