Table 1

Month wise distribution of clinically diagnosed and serologically positive cases amongst primary and secondary cases during the DF outbreak, 2003

Month
Total Suspected cases
Serologically Positive cases (%)
Primary infection (IgM Positivity)
Secondary infection (IgM+ IgG Positivity)
Suspected secondary infection (IgG Positivity)

August
12
3 (0.34%)
1 (0.5%)
1 (0.26%)
1 (0.32%)
September
157
68 (7.6%)
17 (8.6%)
24 (6.3%)
27 (8.6%)
October
982
583 (65.3%)
126 (63.3%)
246 (64.57%)
211 (67.4%)
November
362
230 (25.76%)
49 (24.6%)
110 (28.87%)
71 (22.68%)
December
37
9 (1%)
6 (3%)
0 (0%)
3 (1%)
Total
1550
893 (57.36%)
199 (22.28%)
381 (42.67%)
313 (35.05%)

Chakravarti and Kumaria Virology Journal 2005 2:32   doi:10.1186/1743-422X-2-32