Volume 27, Number 11—November 2021
Synopsis
Interventions to Disrupt Coronavirus Disease Transmission at a University, Wisconsin, USA, August–October 2020
Table 2
Attack rates of coronavirus disease within dormitories and within roommates for dormitories with >10 cases, University of Wisconsin—Madison, Dane County, Wisconsin, USA, August 25–October 31, 2020*
Dormitory | No. residents | Residents with confirmed SARS-CoV-2 infection | Attack rates in roommates 2–14 d after index case† |
---|---|---|---|
Dormitory A | 1,195 | 291/1,195 (24.4) | 41/165 (24.8) |
Dormitory B | 924 | 295/924 (31.9) | 32/172 (18.6) |
Dormitory C | 478 | 58/478 (12.1) | 7/35 (20.0) |
Dormitory D | 181 | 19/181 (10.5) | 2/9 (22.2) |
Dormitory E | 532 | 51/532 (9.6) | 4/37 (10.8) |
Dormitory F | 384 | 31/384 (8.1) | 5/23 (21.7) |
Dormitory G | 372 | 27/372 (7.3) | 2/15 (13.3) |
Dormitory H | 319 | 20/319 (6.3) | 1/14 (7.1) |
Dormitory I | 435 | 13/435 (3.0) | 2/11 (18.2) |
All other dormitories‡ |
1,342 |
51/1,342 (3.8) |
5/33 (15.2) |
Total† | 6,162 | 856/6,162 (13.9) | 101/514 (19.6) |
*Values are no. positive/no. in category (%). †One room included in the roommate attack rate analysis housed 3 residents, whereas all others housed 2 residents; in the room with 2 susceptible residents, neither tested positive within 2–14 d of the index case. ‡Includes aggregated data from 10 dormitories not listed here that had <10 total cases each; attack rates in these halls were 1.9%–5.6%.
1These authors contributed equally to this article.