Table 1. Seroprevalence of rubella among pregnant women from six surveillance sites, by selected socio-demographic characteristics, India, 2019–20.

Socio-demographic characteristics	No. tested	Positive		Negative		Indeterminate
		No.	% (95% CI)	No.	% (95% CI)	No.	% (95% CI)
Age group
16–19	87	69	79.3 (69.7, 86.5)	17	19.5 (12.6, 29.1)	1	1.1 (0.2, 6.2)
20–24	687	553	80.5 (77.4, 83.3)	128	18.6 (15.9, 21.7)	6	0.9 (0.4, 1.9)
25–29	698	586	84.0 (81.0, 86.5)	109	15.6 (13.1, 18.5)	3	0.4 (0.1, 1.3)
30–34	259	219	84.6 (79.7, 88.4)	39	15.1 (11.2, 19.9)	1	0.4 (0.1, 2.2)
35–45	69	54	78.3 (67.2, 86.4)	15	21.7 (13.6, 32.8)	0	-
Education level
Illiterate	39	36	92.3 (79.7, 97.3)	3	7.7 (2.7, 20.3)	0	-
Up to 5th standard	79	68	86.1 (76.8, 92.0)	11	13.9 (8.0, 23.2)	0	-
6th to 10th standard	483	406	84.1 (80.5, 87.1)	73	15.1 (12.2, 18.6)	4	0.8 (0.3, 2.1)
11th standard to Graduate	1012	811	80.1 (77.6, 82.5)	194	19.2 (16.9, 21.7)	7	0.7 (0.3, 1.4)
Postgraduate	187	160	85.6 (79.8, 89.9)	27	14.4 (10.1, 20.2)	0	-
Place of residence
Rural area	783	612	78.2 (75.1, 80.9)	165	21.1 (18.4, 24.1)	6	0.8 (0.4, 1.7)
Urban area	1017	869	85.4 (83.1, 87.5)	143	14.1 (12.1, 16.3)	5	0.5 (0.2, 1.1)
Sentinel site
All India Institute of Medical Sciences, Bhubaneswar	300	243	81.0 (76.2, 85.0)	53	17.7 (13.8, 22.4)	4	1.3 (0.5, 3.4)
Niloufer Hospital, Hyderabad	300	266	88.7 (84.6, 91.8)	33	11.0 (7.9, 15.0)	1	0.3 (0.06, 1.9)
All India Institute of Medical Sciences, Bhopal	300	259	86.3 (82.0, 89.8)	40	13.3 (9.9, 17.6)	1	0.3 (0.06, 1.9)
Mahatma Gandhi Institute of Medical Sciences, Sewagram	300	240	80.0 (75.1, 84.1)	60	20.0 (15.9, 24.9)	0	-
King Georges Medical University, Lucknow	300	266	88.7 (84.6, 91.8)	34	11.3 (8.2, 15.4)	0	-
Govt Medical college, Trivandrum	300	207	69.0 (63.6, 74.0)	88	29.3 (24.5, 34.7)	5	1.7 (0.7, 3.8)
Overall	1800	1481	82.3 (80.4, 84.0)	308	17.1 (15.4, 18.9)	11	0.6 (0.3, 1.1)