Objective To describe the epidemiological features of hand-foot-mouth disease (HFMD) in Pudong New Area of Shanghai from 2009 to 2012 for control and early warning of HFMD in local residents.
Methods Data of study population and HFMD cases in Pudong New Area were collected during a four-year timeframe (2009-2012) for descriptive epidemiological analysis on incident distribution,clusters,outbreak,and pathogen surveillance of HFMD.
Results From 2009 to 2012,a total of 37 345 HFMD cases were reported including 149 severe cases and 7 fatalities.The estimated incidence rate of HFMD was 120.49/105 in 2009 and increased to 248.33/105 in 2012.A seasonal variation of HFMD incidence was also found,with a peak from May to July,followed by a minor peak from November to December.The male-to-female ratio was 1.59.Children under five years old accounted for 93.09% of the total reported cases.Children in geographically dispersed families and those in nurseries or kindergartens composed 95.79% of the reported cases.All subdistrcts and towns of Pudong New Area reported HFMD cases,and the highest incidence rate was 207.68/105 among the subdistricts and 294.30/105 among the towns.A total of 1 566 clustered outbreak events of HFMD largely affected children in nurseries and kindergartens.CoxA16 and EV71 were the main pathogens.
Conclusion The HFMD incidences are increasing with explicit seasonal variation and gender and age preponderance in Pudong New Area during 2009-2012.We should further study early warning and prediction of HFMD based on routine monitoring and laboratory testing.
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