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

Erin D Moritz,Susannah L McKay,Farrell A Tobolowsky,Stephen P LaVoie,Michelle A Waltenburg,Kristin D Lecy,Natalie J Thornburg,Jennifer L Harcourt,Azaibi Tamin,Jennifer M Folster,Jeanne Negley,Allison C Brown,L Clifford McDonald,Preeta K Kutty, CDC Infection Prevention and Control Group

Infection control and hospital epidemiology（2021）

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摘要

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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