A new Omicron variant XBB.1.5 is causing concerns among scientists as it is spreading like a wildfire across dozens of countries, with
What to Know About the Delta Variant Emily AnthesReporting on the coronavirus Does the Delta variant cause different symptoms? It’s not clear
In the United States, nearly 50 percent of all residents are fully vaccinated. But in India, only about 5 percent of the
CDC: “SARS-CoV-2 Variant Classifications and Definitions: Variant of Interest,” “SARS-CoV-2 Variant Classifications and Definitions: Variant of Concern,” “SARS-CoV-2 Variant Classifications and Definitions:
Viruses evolve. SARS-CoV-2, the virus that causes Covid-19, is no exception. So the emergence of variants is no surprise, and not every
As for the virus itself, the country has been averaging fewer than 15,000 new coronavirus cases a day for nearly a month,
The Delta variant, which is now responsible for most coronavirus infections in England, is not driving a surge in the rate of
With vaccinations on the rise and mortality rates related to Covid-19 going down in Europe and other parts of the world, many
If you haven’t yet mastered the name of the latest coronavirus variant to set nations on edge — B.1.617.2, as evolutionary biologists