LONDON — A newly-discovered mutation of the delta variant is being investigated in the U.K. amid worries that it could make the virus even more transmissible and undermine Covid-19 vaccines further.

The World Health Organization and the Centers for Disease Control and Prevention have both designated beta as a “variant of ...

Here’s what the Centers for Disease Control and Prevention (CDC) says about the Delta variant, its symptoms, characteristics and other things to watch for: Viruses constantly change through mutation, ...

A coffin is buried at the Vila Formosa cemetery in Sao Paulo, Brazil, in April 2021, during a deadly surge of the Covid-19 pandemic: the new, even more contagious ...

UNITED STATES — The delta variant of COVID-19 is becoming even more dominant throughout the country. As numbers are rising, so is the amount of mixed messaging. Health professionals say getting the ...

The analysis included 14,019 cases of the Delta variant – 166 of whom were hospitalised – between April 12 and June 4.

The fast-spreading delta variant of the coronavirus has been gaining traction worldwide since it was first detected in India. It’s a version of the coronavirus that has been found in more than 80 ...

The delta variant has emerged as the dominant strain of the novel coronavirus in the United States, according to updated data from the Centers for Disease Control and Prevention (CDC). The CDC’s ...