Author Topic: Household exposure to SARS-CoV-2 confers greatest risk of transmission, study finds  (Read 4 times)

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Offline agate

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From NEJM Journal Watch (August 16, 2020), this summary of a recent study of COVID-19 transmission that appeared in  Annals of Internal Medicine:


Quote
Household & other transmission: [/size]Household exposure to SARS-CoV-2 confers the greatest risk for transmission, while exposure on public transportation seems to confer the least, a study in the [/size]Annals of Internal Medicine[/size] suggests. Researchers studied roughly 3400 close contacts of nearly 400 COVID-19 patients in Guangzhou, China. In addition to traditional contact tracing, public health officials used mobility data from cell phones to identify exposure on public transportation. Overall, nearly 4% of all contacts became infected. Some 10% of household contacts were infected versus 1% of those exposed in healthcare settings and 0.1% of those exposed on public transportation. The risk for transmission increased as the severity of the index case increased, from 0.3% with an asymptomatic index case to 13.6% with an expectorating symptomatic case.


The entire article:


https://www.acpjournals.org/doi/10.7326/M20-2671
MS Speaks--online for 14 years

SPMS, diagnosed 1980. Avonex 2001-2004. Copaxone 2007-2010.

 

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