Table 1.
Characteristics of 212 index cases diagnosed at the University of Texas at Austin, October 1, 2020–April 15, 2021
| N (%) or median (range) | |
|---|---|
| Age, years | 21 (18–58) |
| Sex | |
| Female | 117 (55.5%) |
| Viral load (log10 copies per mL) | 5.6 (1.8–10.4) |
| < 5 log10 copies per mL | 75 (35.4%) |
| 5–8 log10 copies per mL | 129 (60.8%) |
| > 8 log10 copies per mL | 8 (3.8%) |
| Comorbidity | |
| Yes | 29 (13.7%) |
| Asthma | 21 (72.4%) |
| Current smoker | 3 (10.3%) |
| Chronic kidney disease | 2 (6.9%) |
| Diabetes | 1 (3.4%) |
| Severe obesity (BMI > 35) | 1 (3.4%) |
| Immunocompromised | 1 (3.4%) |
| Hypertension | 1 (3.4%) |
| Symptoms reported at time of investigation | |
| Yes | 167 (78.8%) |
| Congestion or runny nose* | 107 (64.1%) |
| Fatigue* | 72 (43.1%) |
| Cough* | 72 (43.1%) |
| Headache* | 72 (43.1%) |
| Sore throat* | 68 (40.7%) |
| Muscle ache* | 40 (24.0%) |
| Loss of taste or smell* | 36 (21.6%) |
| Test relative to symptom onset (N = 167) | |
| Tested prior to symptom onset | 19 (11.4%) |
| Tested on day of onset | 43 (25.7%) |
| Tested after symptom onset | 105 (62.9%) |
| University affiliation | |
| Student | 200 (94.4%) |
| Staff or Faculty | 12 (5.6%) |
*Symptom reported by at least 20% of symptomatic cases (N = 167)