Acute XXXX with 2009 pandemic flu: comparison with seasonal flu.

@entity1 @entity131 @entity75 @entity16
To clarify the features of @entity131 associated with 2009 pandemic flu. We identified 51 @entity1 with @entity131 with seasonal flu from the data base accumulated by Tokai Pediatric Neurology Society. We also collected 10 @entity1 with @entity131 with 2009 pandemic flu. The clinical course, laboratory data, neuroimaging findings, treatment, and the outcome of these @entity1 were recruited using a structured research form. These data were compared between the two groups. The age was larger in the 2009 pandemic flu group (median, 109.5months) than in the seasonal flu group (median, 44months). There was no significant difference in other demographic data, @entity16 , laboratory and neuroimaging findings, and treatment. Various degrees of @entity16 including death were observed in 32% of the @entity1 in the seasonal flu group, and in 50% in the 2009 pandemic flu groups. The analyses of @entity1 with ages of 6years or older revealed that moderate or more severe sequelae were more frequent in @entity1 with 2009 pandemic flu. Acute @entity75 with 2009 pandemic flu occurred mainly among @entity1 with 6years of age or older, and the outcome was worse in this age group compared with @entity131 with seasonal flu.
