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First Mildly Ill, Non-Hospitalized Case of Coronavirus Disease 2019 (COVID-19) Without Viral Transmission in the United States — Maricopa County, Arizona, 2020
Scott Sarah E.
Zabel Karen.
Collins Jennifer.
Hobbs Katherine C.
Kretschmer Melissa J.
Lach Mitchell.
Turnbow Katie.
Speck Lindsay.
White Jessica R.
Maldonado Keila.
Howard Brandon.
Fowler Jeanene.
Singh Sonia.
Robinson Susan.
Pompa Alexandra Peterson.
Chatham-Stephens Kevin.
Xie Amy.
Cates Jordan.
Lindstrom Stephen.
Lu Xiaoyan.
Rolfes Melissa A.
Flanagan Marcy.
Sunenshine Rebecca.
Maricopa County COVID-19 Case Investigation Team.
Acceso Abierto
Atribución-NoComercial-SinDerivadas
10.1093/cid/ciaa374
Abstract Background Coronavirus disease 2019 (COVID-19) causes a range of illness severity. Mild illness has been reported, but whether illness severity correlates with infectivity is unknown. We describe the public health investigation of a mildly ill, non-hospitalized COVID-19 case who traveled to China. Methods The case was a Maricopa County resident with multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-positive specimens collected on January 22, 2020. Contacts were persons exposed to the case on or after the day before case diagnostic specimen collection. Contacts were monitored for 14 days after last known exposure. High-risk contacts had close, prolonged case contact (≥10 minutes within 2 meters). Medium-risk contacts wore all U.S. Centers for Disease Control and Prevention (CDC)-recommended personal protective equipment during interactions. Nasopharyngeal and oropharyngeal (NP/OP) specimens were collected from the case and high-risk contacts and tested for SARS-CoV-2. Results Paired case NP/OP specimens were collected for SARS-CoV-2 testing at 11 time points. In 8 pairs (73%), ≥1 specimen tested positive or indeterminate, and in 3 pairs (27%) both tested negative. Specimens collected 18 days after diagnosis tested positive. Sixteen contacts were identified; 11 (69%) had high-risk exposure, including 1 intimate contact, and 5 (31%) had medium-risk exposure. In total, 35 high-risk contact NP/OP specimens were collected for SARS-CoV-2 testing; all 35 pairs (100%) tested negative. Conclusions This report demonstrates that SARS-CoV-2 infection can cause mild illness and result in positive tests for up to 18 days after diagnosis, without evidence of transmission to close contacts. These data might inform public health strategies to manage individuals with asymptomatic infection or mild illness.
Clinical Infectious Diseases
2020
Artículo
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7184399/pdf/main.pdf
Inglés
VIRUS RESPIRATORIOS
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