[Analysis of prevalence season and trend of meningococcal disease by circular distribution in China].
OBJECTIVE
To analyze the prevalence season and trend of meningococcal disease in China by epidemic years from 2004 to 2008 in order to provide scientific basis for making strategies ofmeningococcal disease prevention and control.


METHODS
The incidence numbers of meningococcal disease were calculated by weeks, epidemic years and areas. The seasonality and prevalence trends of meningococcal disease were analyzed by circular distribution.


RESULTS
The incidence trend of meningococcal disease had obvious seasonality in China (P < 0.01). The peak of meningococcal disease were different by epidemic years and areas (P < 0.01). There were no association between annual incidence rates and seasonality.


CONCLUSIONS
We should strength meningococcal disease surveillance before epidemic peak period,and put immunoprophylaxis first and carry out comprehensive measures of prevention and control.
Ning
Gui-jun
GJ
Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing 100050, China.
Li
Jun-hong
JH
Yin
Zun-dong
ZD
D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D006801:Humans; D007223:Infant; D008585:Meningitis, Meningococcal / Q000453:epidemiology* / Q000517:prevention & control; D022401:Meningococcal Vaccines; D012621:Seasons; D012984:Software
D022401:Meningococcal Vaccines