As cases of the Delta variant continue to raise concerns across the United States, a new variant reaches a warning level for the World Health Organization.

While the United States, Canada and Mexico are reporting overall reductions in Covid-19 cases and deaths, new infections are increasing in the rest of the Americas, Pan American Health Organization (PAHO) Director Carissa Etienne said.

The World Health Organization listed AstraZeneca’s Covid-19 vaccine for emergency use, widening access in the developing world, while sources said the EU is in talks with Moderna on buying more vaccines.

Health authorities in Colombia and Brazil will launch large-scale mosquito-control campaigns using a using naturally occurring bacteria known as Wolbachia.