COVID study sugest length of exposure is biggest factor in disease spread

COVID contact-tracing study suggests length of exposure biggest factor in disease spread Lakshmiprasad S / iStock CIDRAP

An analysis of 7 million contacts of COVID-19 patients in the United Kingdom estimates that most transmissions resulted from exposures lasting 1 hour to several days and that households accounted for 40% of spread from spring 2021 to early 2022.

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