Delta is a highly contagious SARS-CoV-2 virus strain that was first identified in India, and is now circulating in the United States and other countries. The vaccines have proven to be highly effective against Delta, but anyone who is unvaccinated is at risk for infection by the variant.
News > Yale …” >https://www.yalemedicine.org/news/5-things-to-know-delta-variant-covid

