World Coronavirus Dispatch: NYC extends vaccine mandate to all employees

Stories from around the world on the fight against the pandemic

Delta variant upends assumptions about Covid

The Delta variant is the fastest, fittest and most formidable version of the coronavirus that causes Covid-19 the world has encountered, and it is upending assumptions about the disease even as nations loosen restrictions and open their economies, according to virologists and epidemiologists.

Vaccine protection remains very strong against severe infections and hospitalisations caused by any version of the coronavirus, and those most at risk are still the unvaccinated, according to interviews with 10 leading Covid-19 experts. Read more

NYC extends vaccine mandate to all employees

New York City Mayor Bill de Blasio announced on Monday that