Bulletin of the World Health Organization

A cohort study to assess the new WHO Japanese encephalitis surveillance standards

Tom Solomon, Thi Thu Thao, Penny Lewthwaite, Mong How Ooi, Rachel Kneen, Nguyen Minh Dung, Nicholas White

Volume 86, Number 3, March 2008, 178-186

Table 1. AES classification on admission for 380 patients, according to JEV status

AES classification Children
Adults
Total (N = 380)
JEV positive (N = 54) JEV negative (N = 62) JEV unknown (N = 33) All (N = 149) JEV positive (N = 9) JEV negative (N = 171) JEV unknown (N = 51) All (N = 231)
Change in mental status, new-onset seizures or botha 35 38 23 96 9 145 46 200 296
Change in mental status onlya 14 15 9 38 7 101 26 134 172
New onset seizures only 1 10 5 16 0 1 1 2 18
Both change in mental status and seizures 20 13 9 42 2 43 19 64 106
Neither change in mental status nor seizures 19 24 10 53 0 26 5 31 84

AES, acute encephalitis syndrome; JEV, Japanese encephalitis virus.a Acute encephalitis syndrome is defined as an acute febrile illness with change in mental status, new-onset seizures or both.

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