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Volume 27, Number 4—April 2021

Characteristics of SARS-CoV-2 Transmission among Meat Processing Workers in Nebraska, USA, and Effectiveness of Risk Mitigation Measures

Jocelyn J. HersteinComments to Author , Abraham Degarege, Derry Stover, Christopher Austin, Michelle M. Schwedhelm, James V. Lawler, John J. Lowe, Athena K. Ramos, and Matthew Donahue
Author affiliations: University of Nebraska Medical Center, Omaha, Nebraska, USA (J.J. Herstein, A. Degarege, J.V. Lawler, J.J. Lowe, A.K. Ramos); Nebraska Department of Health and Human Services, Lincoln, Nebraska, USA (D. Stover, C. Austin, M. Donahue); Nebraska Medicine, Omaha (M.M. Schwedhelm, J.V. Lawler)

Main Article

Table 2

Comparisons of the incidence of severe acute respiratory syndrome coronavirus 2 infection before and after mask or physical barrier interventions or both among employees in 13 meatpacking facilities in Nebraska, April–July 2020*

Facility Incidence /1,000 persons /d
<10 d after final intervention 10 d after final intervention p value for difference
Facilities that initiated a universal mask policy >10 d before physical barriers
A 7.27 0.33 <0.001
B 3.21 0.69 <0.001
C 3.46 0.27 <0.001
D 3.64 0.15 0.072
Facilities that initiated a universal mask policy and physical barriers <10 d of each other
F 17.16 0.58 <0.001
G 2.49 1.27 0.002
H 4.08 0.78 <0.001
I 6.82 1.40 <0.001
J 2.19 0.059 <0.001
Facilities that only initiated a universal mask policy
L 3.2 2.87 0.745
*For facilities that initiated both a universal mask policy and physical barriers, date of last intervention was defined as start date of latter intervention (i.e., if physical barriers were initiated first, final intervention date was date of mask policy initiation). For facilities that initiated only masking, final intervention date was the initiation date.

Main Article

Page created: February 02, 2021
Page updated: March 18, 2021
Page reviewed: March 18, 2021
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