Table.

Anti-Nipah antibodies among symptomatic survivors of Nipah virus infection and their asymptomatic contacts from Kerala, India

Post-onset of disease/days post-exposure	Anti-NiV IgM		Anti-NiV IgG
	Number of samples	Average OD (±SD)	Number of samples	Average OD±SD
0-7	3	0.81±0.24	3	0.352±0.03
8-14	11	0.33±0.11	11	0.4±0.07
15-21	5	0.38±0.11	5	0.55±0.15
22-28	3	0.41±0.041	3	0.56±0.05
29-35	1	0.6	1	0.65
36-60	5	0.26±0.189	5	0.59±0.37
61-180	4	0.36	4	0.62±0.48
181-365	4	ND	4	0.59±0.06
366-476	4	ND	4	0.95±0.27

IgM cut-off: 0.20 and IgG cut-off: 0.35. OD, optical density; ND, not detected; SD, standard deviation; Ig, immunoglobulin; NiV, Nipah virus