Table 4. Cases which had been reported before the outbreak was recognised, initiating potential reactive vaccination efforts.

Site	Year	No. of cholera cases reported before the outbreak was recognised
		Rapid response time (24hrs after the first case)	Delayed (3 weeks after the first case)	Maximum (6 weeks after the first case)
Kolkata	2003	3	3	6
	2004	1	51	84
	2005	1	4	13
Unguja	1997–98	14	142	164
	2002–03	14	62	119
	2004–05	43	178	322
	2006–07	2	73	154
Pemba	2002–03	6	28	81
	2003–04	15	64	171
	2006–07	21	124	167

In Zimbabwe 24 hrs, 3 weeks and 6 weeks after the first 400 cases had been reported (and the outbreak recognised) the total number of cumulative cases were 501, 1,401 and 3,501 respectively (i.e. including the first 400).