Differential impact of quarantine policies for recovered COVID-19 cases in England: a case cohort study of surveillance data, June to December 2020

Table 1 Number and time (days) to consecutive COVID-19 case(s) within a household, June-December 2020, England

Total no. household cases^a	Time (days) to subsequent household COVID-19 case					No. cases (%)
Total no. household cases^a	0–2	3–10	11–28	29–60	61–90	No. cases (%)
Private residential dwelling
1	-	-	-	-	-	739,002 (45.0%)
2	129,033	81,252	20,287	10,120	7,762	485,186 (29.6%)
3	98,101	59,659	17,050	6,909	5,078	234,331 (14.3%)
4	63,149	36,853	10,385	3,468	2,615	119,847 (7.3%)
5	24,391	14,215	4,584	1,414	1,080	41,105 (2.5%)
6	8,729	5,232	1,972	653	423	13,690 (0.8%)
7	3,407	2,079	807	328	205	5,069 (0.3%)
8	1,324	807	350	171	72	1,896 (0.1%)
9	498	328	154	67	43	729 (0.04%)
10	234	219	110	74	22	379 (0.02%)
11	62	37	3	0	1	77 (0.01%)
12	18	11	2	10	2	24 (< 0.01%)
13	30	16	19	1	0	38 (< 0.01%)
14	12	10	0	0	0	14 (< 0.01%)
15	11	7	0	1	0	14 (< 0.01%)
16	8	8	3	11	1	11 (< 0.01%)
Total	329,007	200,733	55,726	23,227	17,304	1,641,412
Houses of multiple occupancy
1	-	-	-	-	-	5,546 (54.7%)
2	479	278	159	130	89	2,308 (22.8%)
3	381	255	120	98	60	1,146 (11.3%)
4	255	149	77	50	23	553 (5.5%)
5	158	93	34	29	30	298 (2.9%)
6	91	63	31	16	5	163 (1.6%)
7	43	28	24	18	19	80 (0.8%)
8	11	8	2	1	1	16 (0.2%)
9	17	11	5	9	1	25 (0.2%)
10	0	0	1	2	2	3 (0.03%)
Total	1,435	885	453	353	230	10,138

^aThe total number of laboratory-confirmed COVID-19 household cases was based on data to 24th June 2021, whereas the number of re-exposed cases was restricted to cases diagnosed (by earliest positive specimen date) between 29th June and 28th December 2020

ISSN: 1471-2458