Objective To analyze the occurrence of epidemic encephalitis B in Guangzhou city from 2003 to 2006, and to provide the evidence for the prevention and control of epidemic encephalitis B. Methods Serum samples from 545 suspected encephalitis B cases were collected, and IgM were detected with ELISA method. Results 28 cases were positive for encephalitis B IgM. Positive samples were mainly collected from the regions between the city and the county areas, in which 7 cases （25%） in Zencheng district, 6 cases （21.43%） in Tianhe district, 5 cases （17.86%） in Panyu district, 3 cases （10.71%） in Huadu district, 2 cases （7.14%） in Huangpu district, 2 cases （7.14%） in Baiyun district, 2 cases （7.14%） in Conghua district, and 1 cases （3.57%） in Fangchun district. 92.86% of the positive samples were obtained from patients under 15 years old. Conclusion Preventive measures should be implemented to reduce the incidence of encephalitis B. These include the establishment of a surveillance system, strengthening of the laboratory diagnosis, and vaccination of children under age 15.
Journal Of Tropical Medicine
epidemic encephalitis B