Volume 28, Supplement—December 2022
SUPPLEMENT ISSUE
Surveillance
Lessons Learned from CDC’s Global COVID-19 Early Warning and Response Surveillance System
Philip M. Ricks
, Gibril J. Njie, Fatimah S. Dawood, Amy E. Blain, Alison Winstead, Adebola Popoola, Cynthia Jones, Chaoyang Li, James Fuller, Puneet Anantharam, Natalie Olson, Allison Taylor Walker, Matthew Biggerstaff, Barbara J. Marston, Ray R. Arthur, Sarah D. Bennett, and Ronald L. Moolenaar
, Gibril J. Njie, Fatimah S. Dawood, Amy E. Blain, Alison Winstead, Adebola Popoola, Cynthia Jones, Chaoyang Li, James Fuller, Puneet Anantharam, Natalie Olson, Allison Taylor Walker, Matthew Biggerstaff, Barbara J. Marston, Ray R. Arthur, Sarah D. Bennett, and Ronald L. Moolenaar
Table 3
Data completeness collected by CDC EWARS system for selected variables during epidemiologic weeks 3 thru 9, January 20–March 7, 2020*
| Variables | Epidemiologic week |
||||||
|---|---|---|---|---|---|---|---|
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Total new cases |
38 |
135 |
186 |
331 |
1,037 |
5,238 |
17,346 |
| Patient demographics | |||||||
| Age | 33 (86.8) | 106 (78.5) | 87 (46.8) | 97 (29.3) | 156 (15) | 156 (3) | 325 (1.9) |
| Sex | 38 (100) | 115 (85.2) | 91 (48.9) | 97 (29.3) | 157 (15.1) | 190 (3.6) | 291 (1.7) |
| Nationality | 37 (97.4) | 66 (48.9) | 54 (29) | 52 (15.7) | 48 (4.6) | 82 (1.6) | 121 (0.7) |
| Place of residence |
27 (71.1) |
39 (28.9) |
28 (15.1) |
17 (5.1) |
61 (5.9) |
161 (3.1) |
47 (0.3) |
| Clinical indicators | |||||||
| Date of illness onset | 16 (42.1) | 74 (54.8) | 58 (31.2) | 59 (17.8) | 57 (5.5) | 60 (1.2) | 36 (0.2) |
| Date person sought care | 20 (52.6) | 67 (49.6) | 58 (31.2) | 45 (13.6) | 13 (1.3) | 13 (0.3) | 8 (0.1) |
| Fever | 21 (55.3) | 46 (34.1) | 45 (24.2) | 32 (9.7) | 29 (2.8) | 28 (0.5) | 27 (0.2) |
| Cough |
12 (31.6) |
33 (24.4) |
34 (18.3) |
27 (8.2) |
20 (1.9) |
30 (0.6) |
15 (0.1) |
| Exposures | |||||||
| Travel, China | 38 (100) | 126 (93.3) | 95 (51.1) | 77 (23.3) | 59 (5.7) | 63 (1.2) | 27 (0.2) |
| Travel, excluding China | 1 (2.6) | 20 (14.8) | 46 (24.7) | 43 (13) | 34 (3.3) | 190 (3.6) | 297 (1.7) |
| Contact with confirmed COVID-19 case | 15 (39.5) | 65 (48.2) | 142 (76.3) | 153 (46.2) | 386 (37.2) | 135 (2.6) | 74 (0.4) |
| Any exposure information† | 38 (100) | 129 (95.6) | 161 (86.6) | 163 (49.2) | 389 (37.5) | 274 (5.2) | 336 (1.9) |
| First exposure date | 3 (7.9) | 10 (7.4) | 13 (7) | 6 (1.8) | 0 | 0 | 0 |
| Last exposure date | 18 (47.4) | 63 (46.7) | 26 (14) | 16 (4.8) | 0 | 1 (<0.001) | 0 |
*Values are no. (%) of total new cases per week. Total data points collected, n = 24,311. CDC, US Centers for Disease Control and Prevention; EWARS, Early Warning and Response Surveillance. †Includes any information regarding travel or contact with a confirmed case.
Page created: June 01, 2022
Page updated: December 11, 2022
Page reviewed: December 11, 2022
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