The World Health Organization is urging even fully vaccinated people to continue wearing masks, maintain social distancing and take other precautions as more outbreaks linked to the Delta variant spread around the world.

Tedros Adhanom Ghebreyesus: “Delta is the most transmissible of the variants identified so far, has been identified in at least 85 countries and is spreading rapidly among unvaccinated populations.”

Israel has reimposed an indoor mask mandate and other measures amid a new rise in cases. About half of those infected in a recent outbreak linked to the Delta variant were fully vaccinated. Meanwhile, India is reporting mounting cases of a related variant which has been dubbed “Delta Plus.”