The head of the World Health Organization says the COVID-19 variant first seen in India, also known as the delta variant, is “the most transmissible of the variants identified so far” and is now spreading in at least 85 countries.
The head of the World Health Organization says the COVID-19 variant first seen in India, also known as the delta variant, is “the most transmissible of the variants identified so far” and is now spreading in at least 85 countries.