COVID-19 transmission highest within a week of symptom onset: study

The viral transmission of COVID-19 has been found to be highest within a week of the onset of symptoms, according to a medical study authored by a Taiwanese research team published by the American Medical Association Friday.

(Full text of the story is now in CNA English news archive. To view the full story, you will need to be a subscribed member of the CNA archive. To subscribe, please read here.)