COVID-19 variant that caused cough as first symptom may have hastened disease spread in the U.S.

By | December 17, 2021
The strain of COVID-19 virus that was circulating in the United States and Europe during the first wave of the pandemic may have been particularly infectious because the most common first symptom was likely a cough, according to a study led by researchers from the USC Dornsife College of Letters, Arts and Science.