Table 1.

Summary of the sample collection date after onset of fever

Group	Leptospirosis	Local control
Number of sera	337	92
Number of sera with day after onset of fever	309	88
Range (days)	0–63	0–53
Median (days)	13	3
Number of sera between 0 and 7 days	136	80
Number of sera between 8 and 20 days	82	3
Number of sera > 20 days	91	5