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Repeated antigen testing among severe acute respiratory coronavirus virus 2 (SARS-CoV-2)-positive nursing home

Erin D Moritz¹, Susannah L McKay¹, Farrell A Tobolowsky¹

¹COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, Georgia.

Infection Control and Hospital Epidemiology

|August 20, 2021

Abstract:

Repeated antigen testing of 12 severe acute respiratory coronavirus virus 2 (SARS-CoV-2)-positive nursing home residents using Abbott BinaxNOW identified 9 of 9 (100%) culture-positive specimens up to 6 days after initial positive test. Antigen positivity lasted 2-24 days. Antigen positivity might last beyond the infectious period, but it was reliable in residents with evidence of early infection.

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