Health
COVID-19 most contagious in first 5 days of illness, study finds – CIDRAP
The findings may explain why COVID-19 spreads quickly and is difficult to contain.
A study published yesterday in The Lancet Microbe shows that COVID-19 is most contagious in the first 5 days after symptom onset, underscoring the importance of early case identification and quarantine.
Led by researchers at the University of St. Andrews in Scotland, the systematic review and meta-analysis included 98 studies on 7,997 patients infected with coronaviruses that cause COVID-19 (SARS-CoV-2), severe acute respiratory syndrome (SARS-CoV-1), or Middle East respiratory syndrome (MERS-CoV)….
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