A Study on the Surveillance and Control of Typhoidal Fever in Jiangsu Province

A study on the epidemiological characterisics and surveillance of typhoid fever in the surveillance points of typhoid in Ludong, Wuxian and Baoying county (city)of Jiangsu province was carried out. The data showed that the above three counties (cities) were the risk area of typhoid in Jiangsu province, the total number of cases of typhoid were 701, it was 8.87% of the total cases in whole province.The year average morbidity was 23.05/100000,it was significantly more than the province average morbidity (11.4/100000).The highest morbidyty was in the 5 - 9 age group. The cases was concentrated in the young peasants. Through the survey of epidemiological factors in 144 cases of typhoid, it was believed that expose rate of the history of contaminated food in cases group was significantly more than in the control group (71.54% and 34.03% respectively, OR=7.75).It was suggested that there was a trend is the origineral water borne mode has changed into food borne mode. The case peak was in May in Ludong which was two months earlier than that in the other two counties. The adta of 100 cases survey by case - control study indicated that it might be related to the factor that the people in Ludong were much like to eat raw sea food. The authors then suggested that the health education especially to educate people do not eat the raw sea food and popularizing the typhoid Vi vaccine were the two effect measures to control typhoid fever.