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Volume 27, Number 11—November 2021

Effectiveness of Abbott BinaxNOW Rapid Antigen Test for Detection of SARS-CoV-2 Infections in Outbreak among Horse Racetrack Workers, California, USA

Krishna SurasiComments to Author , Kristin J. Cummings, Carl Hanson, Mary Kate Morris, Maria Salas, David Seftel, Liza Ortiz, Ruwan Thilakaratne, Cameron Stainken, and Debra A. Wadford
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (K. Surasi); California Department of Public Health, Richmond, California, USA (K. Surasi, K.J. Cummings, C. Hanson, M.K. Morris, M. Salas, R. Thilakaratne, C. Stainken, D.A. Wadford); Golden Gate Fields, Berkeley, California, USA (D. Seftel); City of Berkeley Public Health Officer Unit, Berkeley (L. Ortiz); Kaiser Permanente San Francisco Internal Medicine Residency Program, San Francisco, California, USA (C. Stainken); University of California San Francisco School of Medicine, San Francisco (C. Stainken).

Main Article

Table 1

Characteristics of horse racetrack staff providing paired anterior nasal swab specimens for the BinaxNOW rapid antigen test and real-time reverse transcription PCR for coronavirus disease, California, USA, November–December 2020*

rRT-PCR result
Not detected
127 (100)
215 (100)
342 (100)
F 26 (20.5) 62 (28.8) 88 (25.7)
101 (79.5)
153 (71.2)
254 (74.3)
Median age (range), y
46 (18–82)
54 (18–92)
52 (18–92)
Age groups, y
18–44 57 (44.9) 75 (34.9) 132 (38.6)
45–64 56 (44.1) 103 (47.9) 159 (46.5)
14 (11.0)
37 (17.2)
51 (14.9)
Hispanic 99 (78.0) 113 (52.6) 212 (62.0)
Non-Hispanic 28 (22.0) 102 (47.4) 130 (38.0)

*Values are no. (%) except as indicated. rRT-PCR, real-time reverse transcription PCR.

Main Article

Page created: August 18, 2021
Page updated: October 19, 2021
Page reviewed: October 19, 2021
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.