. Author manuscript; available in PMC: 2024 May 1.

Published in final edited form as: J Sch Health. 2022 Nov 20;93(5):360–369. doi: 10.1111/josh.13283

Table 3. Secondary and Tertiary Transmission among Household Close Contacts.

	Total Exposure Events	Secondary Transmission			Tertiary Transmission
	Analysis Eligible*	Total Participants with Positive COVID-19 Test following Household Exposure^a	Total Participants Considered Positive^b following Household Exposure	Days to test positivity following household exposure^a , Median (Q1, Q3)	Total Participants with Positive COVID-19 Test following Household Exposure who Reported Close Contacts^a	Total Participants with Positive COVID-19 Test following Household Exposure who Reported Close Contacts = 0^a	Total Number of Close Contacts who were Positive/Total Number of Close Contacts (%)	Total Number of Close Contacts who were Positive in TTS/Total Number of Close Contacts in TTS (%)
All districts, N (%) 95% CI	265	73/265 (28%) (16%−63%)	80/265 (30%) (19%−58%)	5 (2, 8)	71/73 (97%)	52/71 (73%)	2/77 (3%) (1%−5%)	0/7 (0%)
District A	4	3/4 (75%)	3/4 (75%)	6 (5, 6)	3/3 (100%)	3/3 (100%)	0/0 (0%)	0/0 (0%)
District B	193	47/193 (24%)	52/193 (27%)	5 (2, 7)	47/47 (100%)	43/47 (91%)	0/4 (0%)	0/4 (0%)
District C	1	1/1 (100%)	1/1 (100%)	0 (0, 0)	1/1 (100%)	0/1 (0%)	0/15 (0%)	0/0 (0%)
District D	65	21/65 (32%)	23/65 (35%)	4 (2, 9)	20/21 (95%)	6/20 (30%)	2/58 (3%)	0/3 (0%)
District E	2	1/2 (50%)	1/2 (50%)	2 (2, 2)	0/1 (0%)	0/0 (0%)	0/0 (0%)	0/0 (0%)
Elementary school	155	47/155 (30%)	51/155 (33%)	5 (2, 8)	46/47 (98%)	34/46 (74%)	1/48 (2%)	0/5 (0%)
Middle school	57	14/57 (25%)	16/57 (28%)	4 (2, 7)	14/14 (100%)	8/14 (57%)	1/27 (4%)	0/2 (0%)
High school	31	5/31 (16%)	6/31 (19%)	7 (7, 8)	4/5 (80%)	4/4 (100%)	0/0 (0%)	0/0 (0%)
Administration	8	3/8 (38%)	3/8 (38%)	7 (1, 8)	3/3 (100%)	3/3 (100%)	0/0 (0%)	0/0 (0%)
Unknown/multiple levels	14	4/14 (29%)	4/14 (29%)	3 (2, 6)	4/4 (100%)	3/4 (75%)	0/2 (0%)	0/0 (0%)