Volume 27, Number 4—April 2021
Synopsis
Characteristics of SARS-CoV-2 Transmission among Meat Processing Workers in Nebraska, USA, and Effectiveness of Risk Mitigation Measures
Table 1
Timeline exclusions, subsets, and median durations for case investigations of severe acute respiratory syndrome coronavirus 2 infection among meat processing workers, Nebraska, April 1–July 31, 2020*
Category | Illness onset to specimen collection | Specimen collection to Investigation | Illness onset to investigation |
---|---|---|---|
Beginning total | 3,695 | 4,834 | 3,817 |
Erroneous timelines excluded: onset date = collection date = investigation date | 16 | 16 | 16 |
Erroneous timelines excluded: investigation → onset | 39 | 39 | 40 |
Probable cases analyzed separately: onset = investigation → collection | 29 | 29 | 31 |
Probable cases analyzed separately: onset → collection = investigation | 76 | 116 | 76 |
Probable cases analyzed separately: onset → investigation → collection | 19 | 55 | 19 |
Presymptomatic cases analyzed separately: collection → onset → investigation | 214 | 214 | 214 |
Primary timeline totals: onset → collection → investigation |
3,302 |
4,365 |
3,421 |
Median (range) for primary timeline, d | 3 (0–53) | 4 (1–109) | 8 (1–110) |