COVID-19: Some Timelines

Transmission of Infectious Diseases. From Xie He et al. Nature Medicine. 26;672

Let’s say Kwame gets exposed to the SARS-CoV-2 virus on the first day of a month. When would be the best day after that for Kwame to get a test?

Kucirka et al. (Ann Intern Med. 2020 May 13: M20–1495) did a pooled analysis of 7 studies involving 1330 patients that had looked at this question. They found that the best day is Day 8 after exposure. The false-negative rate was 67% on Day 4, fell to 38% on Day 5, and was 20%…

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Nana Dadzie Ghansah

Nana Dadzie Ghansah

An anesthesiologist, photographer, writer, and poet. He lives and works in Lexington, Kentucky.