<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=799546403794687&amp;ev=PageView&amp;noscript=1">

The study looked at colds, influenza and respiratory infections caused by a variety of viruses. It did not include the novel coronavirus. But it did look at milder infections caused by other strains of coronavirus, said Dr. Adit Ginde, a professor of emergency medicine at the University of Colorado School of Medicine and the study’s lead author.