TABLE 1. Characteristics of index patients with laboratory-confirmed SARS-CoV-2 infection and household members enrolled in a prospective study of SARS-CoV-2 household transmission — Tennessee and Wisconsin, April–September 2020.
| Characteristic | No. (%)* | 
|
|---|---|---|
| Index patients (n = 101) | Household members (n = 191) | |
| 
Median age, yrs (IQR)
 | 
32 (24–48) | 
28 (14–46) | 
| 
Age group, yrs
 | ||
| <12 | 
5 (5) | 
32 (17) | 
| 12–17 | 
9 (9) | 
30 (16) | 
| 18–49 | 
65 (64) | 
92 (48) | 
| ≥50 | 
22 (22) | 
37 (19) | 
| 
Male
 | 
41 (41) | 
88 (46) | 
| 
Race/Ethnicity
 | ||
| White, non-Hispanic | 
75 (74) | 
127 (67) | 
| Other race, non-Hispanic | 
8 (8) | 
24 (13) | 
| Hispanic or Latino | 
18 (18) | 
40 (21) | 
| 
Underlying medical condition
 | ||
| Any | 
22 (22) | 
37 (19) | 
| Asthma | 
12 (12) | 
24 (13) | 
| Other chronic lung disease | 
0 (0) | 
2 (1) | 
| Cardiovascular disease | 
4 (4) | 
7 (4) | 
| Diabetes | 
4 (4) | 
7 (4) | 
| Chronic renal disease | 
0 (0) | 
2 (1) | 
| Immunocompromising condition | 
2 (2) | 
3 (2) | 
| Smoking/Vaping† | 2 (2) | 4 (2) | 
Abbreviation: IQR = interquartile range.
* Percentages might not sum to 100% because of rounding.
† Data available for 98 index cases and 166 household members.