A coronavirus variant first found in India is now officially a ‘variant of concern,’ the W.H.O. said.

Experts caution that it’s not yet clear just how much of a factor that the variant, B.1.617, has played in the catastrophic rise in cases in India, which are likely undercounted. By Carl Zimmer, Daniel E. Slotnik and Karan Deep Singh from NYT World https://ift.tt/3eA7Duv