TABLE 2. Enrollment details and monitoring preferences among contacts* of confirmed or probable COVID-19† patients enrolled in an automated, web-based symptom monitoring tool (Sara Alert) — Maine, May 14–June 26, 2020.
| Characteristic | No. (%) |
|---|---|
|
Total
|
1,622 (100)
|
|
Interval from last exposure to enrollment (days)
| |
| 0 |
153 (9.5) |
| 1 |
47 (2.9) |
| 2 |
275 (17.1) |
| 3 |
153 (9.5) |
| 4 |
208 (12.9) |
| 5 |
166 (10.3) |
| 6 |
163 (10.1) |
| ≥7 |
447 (27.7) |
| Missing date of last exposure |
10 (—) |
|
Preferred contact method
| |
| E-mailed weblink |
119 (7.3) |
| Text message |
976 (60.2) |
| Texted weblink |
342 (21.1) |
| Telephone call |
127 (7.8) |
| Direct monitoring§ |
58 (3.6) |
|
Preferred contact time
| |
| Morning |
479 (32.5) |
| Afternoon |
126 (8.5) |
| Evening |
870 (59.0) |
| Not recorded |
147 (—) |
|
No. of persons in household enrolled
¶
| |
| 1 |
673 (70.6) |
| 2 |
125 (13.1) |
| 3 |
75 (7.9) |
| 4 |
33 (3.5) |
| 5 |
21 (2.2) |
| ≥6 | 27 (2.7) |
Abbreviation: COVID-19 = coronavirus disease 2019.
* Defined as persons who were within 6 feet of an infectious person (symptomatic persons, 2 days before symptom onset to at least 10 days following symptom onset; asymptomatic persons, 2 days before collection of a specimen that resulted in a positive test to 10 days following specimen collection date) for ≥15 minutes (≥30 minutes before May 29).
† Probable cases had either clinical criteria or epidemiologic evidence of exposure (contact with a person with a confirmed or probable COVID-19 case or contact with a person with clinically compatible illness or linkage to a person with confirmed COVID-19), or met vital records criteria (a death certificate listing COVID-19 or SARS-CoV-2 as a cause of death or a significant condition contributing to death with no confirmatory laboratory testing performed for COVID-19). Confirmed cases had confirmatory laboratory evidence of SARS-CoV-2 infection. COVID-19 signs and symptoms included cough, difficulty breathing, fever, chills, shaking with chills (rigors), muscle pain, headache, sore throat, and new loss of taste or smell.
§ Direct monitoring refers to contacts who did not want to be, or could not be, enrolled for automated monitoring. For these contacts, Maine CDC staff members called contacts daily until the end of their quarantine period.
¶ Based on address reported at time of enrollment.