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.