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

“I think it’s one ingredient to be used in combination with other strategies,” said Dr. Glen Mays, chairman of the Department of Health Systems, Management and Policy in the Colorado School of Public Health. “It certainly could be helpful in helping to keep rates of transmission low overall.”