Monitoring and analysis of epidemic cerebrospinal meningitis in Dejiang County from 2006 to 2011

Objective To understand and master the incidence and epidemiological feature of epidemic cerebrospinal meningitis in Dejiang County, and then to provide scientific basis for making work strategy of the prevention and control of epidemic cerebrospinal meningitis. Methods The epidemic cerebrospinal meningitis cases reported in Dejiang from 2006 to 2011 was conducted through case survey, follow-up investigation and monitoring work, the reported cases were examined by laboratory testing with serum and/or cerebrospinal fluid. Results (1) Between 2006 and 2011, a total of 10 cases of epidemic cerebrospinal meningitis were reported in Dejiang County. The average incidence was 0.31/100 000, and the case fatality rate was 40%. The cases began in February to June, but the fastigium was in February, March and April, accounting for 80.0% of the total number of cases. Age of onset was under the age of 16, the incidence on 0 to 6 years old preschool children accounted for 60% of the total number of cases, men and women ratio was 2.23∶1. (2) Serum and/or cerebrospinal fluid sample collected from every epidemic cerebrospinal meningitis case, its laboratory diagnosis rate was 10.0%. (3) 80% cases had no history of epidemic cerebrospinal meningitis vaccine or vaccination history was unknown. Occupational distribution showed a concentration of cases in scattered crowd (40%). The number of cases in qinglong town was the most with 6 cases (60%). Conclusion The peak onset of epidemic cerebrospinal meningitis is in February, March and April in Dejiang County, and it has obvious seasonality. Qinglong Town belong to Dejiang County, it has dense population, high incidence and obvious territoriality. The age of onset is under the age of 16, and children under the age of 6 have a higher incidence. We should strengthen comprehensive measures based epidemic cerebrospinal meningitis vaccination, and it can provide scientific basis for the prevention and control work of epidemic cerebrospinal meningitis in future of Dejiang County.