. 2022 Oct 20;5(10):e2237522. doi: 10.1001/jamanetworkopen.2022.37522

Table 3. Confirmed and Probable SARS-CoV-2 Cases and Attack Rate by Age Group in 63 SARS-CoV-2 Household Outbreaks.

Age group, y	Participants in outbreak, No.	Cases, No. (%)				Attack rate, No. (%) [95% CI]
		Confirmed SARS-CoV-2 positive		Confirmed SARS-CoV-2 probable	SARS-CoV-2 negative^a	Confirmed SARS-CoV-2 positive	Confirmed SARS-CoV-2 positive or probable
		Asymptomatic	Symptomatic	Confirmed SARS-CoV-2 probable	SARS-CoV-2 negative^a	Confirmed SARS-CoV-2 positive	Confirmed SARS-CoV-2 positive or probable
<12	89	14 (15.7)	29 (32.6)	33 (37.0)	13 (14.6)	43 (48.3) [37.7-59.1]	76 (85.4) [76.0-91.7]
12-17	37	5 (13.5)	11 (29.7)	7 (18.9)	14 (37.8)	16 (43.2) [27.5-60.4]	23 (62.2) [44.8-77.1]
≥18	126	14 (11.1)	61 (48.4)	21 (16.7)	30 (23.8)	75 (59.5) [50.4-68.1]	96 (76.2) [67.6-83.1]
All	252	33 (13.1)	101 (40.1)	61 (24.2)	57 (22.6)	134 (53.2) [46.8-59.4]	195 (77.4) [71.6-82.3]

^{^a}

Includes participants who were asymptomatic and had negative results for SARS-CoV-2 infection in all samples tested during the outbreak.