Table 1

Baseline and clinical characteristics of residents of congregate facilities that experienced outbreaks of COVID-19 between 1 January and 31 July 2021 in India

CharacteristicsAll residents
(n=1114), %
Unvaccinated (n=308)1st or 2nd doses of Covishield vaccine (n=806)P value (χ2 or ANOVA)
Age, median (IQR)31 (19–46)15 (11–18)38 (26–51)<0.001
Age
 <15 years (n=138)
 15–59 years (n=817)
 ≥60 years (n=159)
12.4%
73.3%
14.3%
138/138 (100%)
161/817 (19.7%)
9/159 (5.7%)
0 (0.0%)
656/817 (80.3%)
150/159 (94.3%)
<0.001
Male (n=914)
Female (n=200)
82%
18%
269/914 (29.4%)
39/200 (19.5%)
645/914 (70.6%)
161/200 (80.5%)
0.004
Residence type
Old age homes (n=183)
Monasteries (n=636)
Learning centres (n=295)
16.4%
57.1%
26.5%
39/183 (21.3%)
215/636 (33.8%)
54/295 (18.3%)
144/183 (78.7%)
421/636 (66.2%)
241/295 (81.7%)
<0.001
Current smoker (n=32)
Non-smoker (n=1082)
2.9%
97.1%
2/32 (6.3%)
306/1082 (28.3%)
30/32 (93.8%)
776/1082 (71.7%)
0.006
Past TB (n=123)
No past TB (n=991)
11%
89%
14/123 (11.4%)
294/991 (29.7%)
109/123 (88.6%)
697/991 (70.3%)
<0.001
Chronic hepatitis B (n=66)
No hepatitis B (n=1048)
5.9%
94.1%
6/66 (9.1%)
302/1048 (28.8%)
60/66 (90.9%)
746/1048 (71.2%)
0.001
COPD (n=18)
No COPD (n=1096)
1.6%
98.4%
2/18 (11.1%)
306/1096 (27.9%)
16/18 (88.9%)
790/1096 (72.9%)
0.114
CVD (n=17)
No CVD (n=1097)
1.5%
98.5%
2/17 (11.8%)
306/1097 (27.9%)
15/17 (88.2%)
791/1097 (72.1%)
0.140
Hypertension (n=111)
No hypertension (n=1003)
10%
90%
4/111 (3.6%)
304/1003 (30.3%)
107/111 (96.4%)
699/1003 (69.7%)
<0.001
Diabetes mellitus (n=36)
No diabetes mellitus (n=1078)
3.2%
96.8%
2/36 (5.6%)
306/1078 (28.9%)
34/36 (4.2%)
772/1078 (71.6%)
0.003
CKD (n=3)
No CKD (n=1110)
0.3%
99.7%
0/3 (0.0%)
308/1110 (100%)
3/3 (100%)
802/1110 (72.3%)
0.565
Previous COVID-19 (n=120)
No previous COVID-19 (n=994)
11%
89%
3/120 (2.5%)
305/994 (31.7%)
117/120 (97.5%)
689/994 (69.3%)
<0.001
Symptoms of persons developing COVID-19 (n=159)Residents (n=159)Unvaccinated (n=120)1st or 2nd doses of Covishield (n=39)P value (χ2 or ANOVA)
Cough (n=44)
Fever (n=40)
Shortness of breath (n=18)
Loose stool (n=14)
Loss of taste (n=25)
Loss of smell (n=29)
Any symptom (n=75)
27.7%
25.1%
18.0%
8.1%
15.7%
18.2%
48.7%
26/120 (21.7%)
24/120 (20.0%)
11/120 (9.2%)
9/120 (7.5%)
20/120 (16.7%)
24/120 (20.0%)
51/120 (44.4%)
18/39 (46.2%)
16/39 (41.0%)
7/39 (17.9%)
5/39 (12.8%)
5/39 (12.8%)
5/39 (12.8%)
24/39 (61.4%)
0.003
0.009
0.113
0.308
0.566
0.313
0.063
Hospitalised (n=11)
Not hospitalised (n=1103)
1%
99%
4/308 (1.3%)
304/308 (98.7%)
7/806 (0.87%)
799/806 (99.1%)
0.516
Died (n=4)
Alive (n=1110)
0.4%
99.6%
3/308 (1%)
305/308 (99%)
1/806 (.12%)
805/806 (99.88%)
0.034
  • ANOVA, analysis of variance; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; CVD, cardiovascular disease; TB, tuberculosis.