Table 1. Total serotype-specific cases and controls by trimester.

DENV-1
YEAR	TRIMESTER	CASES	CONTROLS	POPULATION
1999	MAY–AUG	3	285	288
2000	JAN–APR	10	599	609
2000	SEPT–DEC	6	352	358
2001	JAN–APR	9	296	305
2001	SEPT–DEC	8	289	297
2002	JAN–APR	16	271	287
2002	MAY–AUG	7	392	399
2002	SEPT–DEC	9	344	353