S. NO	Socio-demographic characteristics of the study participants	Sub-set	Percentages (%)	Number (n)	COVID-19 PCR +ve contacts visited by PDSRU team (cases)	COVID-19 PCR −ve contacts visited by PDSRU team (cases)
S. NO	Socio-demographic characteristics of the study participants	Sub-set	Percentages (%)	Number (n)	COVID-19 PCR +ve contacts visited by PDSRU team (cases)	COVID-19 PCR −ve contacts visited by PDSRU team (cases)
1	Qualification	Un-educated	49%	39	13	26
		Primary	9%	45	15	30
		Metric	20%	27	9	18
		Intermediate	17%	120	40	80
		Graduation	3%	39	13	26
		Masters	2%	30	10	20
		Phd	0%	0	0	0
2	Co-morbidities	No comorbidity	90%	270	90	180
		DM	02%	6	2	4
		Asthma	04%	9	3	6
		HTN	04%	12	4	8
		Hepatitis	02%	6	2	4
		Ovarian CA	00%	0	0	0
3	Occupation	Health care providers	20%	60	20	40
3	Occupation	Others	80%	240	80	160
4	BCG vaccination status	BCG vaccination, no	63%	189	63	126
4	BCG vaccination status	BCG vaccination, yes	37%	111	37	74
5	Seasonal flu vaccination status	Seasonal flu vaccination, yes	7%	21	7	14
5	Seasonal flu vaccination status	Seasonal Flu vaccination, no	93%	279	93	186
6	Blood groups of the study participants	A+	7.00%	21	7	14
		A−	4.00%	12	4	8
		B+	27.00%	81	27	54
		B−	3.00%	9	3	6
		AB+	2.00%	6	2	4
		AB−	1.00%	3	1	2
		O+	1.00%	3	1	2
		O−	1.00%	3	1	2
		unkown	54.00%	162	54	108