Epdemiological analysis on the data of measles and strategies for its control in Nan′an district of chongqing city during the period from 2004-2008

Objective To analyze the epidemic characteristics and distribution of measles,and to provide scientific basis for further control and elimination of measles.Methods The surveillance data of measles during 2004-2008 in Nan′an district of Chongqing city were analyzed by descriptive epidemiological method.Results 506 measles patients were reported from 2004 to 2008.Cases were found from every town and street.There was geographical variation in the frequencies of measles among the different prefectures.More measles cases occurred from April to August.80.43% of measles cases were scattered living children,students and preschool children,and the cases were mainly children under 5 years(69.56%).Patients younger than the age of primary immunization measles vaccination(eight months) accounted for 20.29% of all the measles cases.Meanwhile,patients older than the age of primary immunization(35.20%) had not been vaccinated before.Conclusion There was an ascending trend of measles incidence rate in Nan′an district of Chongqing city,where the cases were mainly sporadic.More efficient measures must be taken to achieve the goal of measles control and elimination in Nan′an district of Chongqing city.