Transmission of COVID-19 (research published before 20 March 2020)

Added July 28, 2020

Citation: Alimohamadi Y, Taghdir M, Sepandi M. Estimate of the basic reproduction number for COVID-19: a systematic review and meta-analysis. Journal of Preventive Medicine and Public Health. 2020;53(3):151-7.

What is this? The basic reproduction number (R0) for COVID-19 shows how commonly the virus (SARS-CoV-2) is transmitted from person to person.

In this rapid review, the authors searched for studies that had estimated the reproduction number of COVID-19. They restricted their searches to articles published in 2020. The date of the search is not reported but the review was published on 20 March 2020. They included 23 studies, which were all from China.

What was found: At the time of this review, the included studies showed that on average each person with COVID-19 transmitted the infection to between 3 and 4 people (pooled R0 = 3.32).


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