On Tuesday, the U.S. Centers for Disease Control and Prevention updated its guidance to recommend that fully vaccinated people again wear face masks indoors if they are in an area where the novel ...

The Delta variant of Covid-19 is more contagious than other lineages, and is spreading rapidly in under-vaccinated populations. While vaccination is a matter of choice for adults, many children -- ...

NEW YORK - Pfizer on Wednesday shared data about a third dose of its COVID-19 vaccine that suggests it "strongly" boosts protection against the more contagious delta variant of the coronavirus, which ...

The proportion was estimated at approximately 3% in late May. A highly contagious variant of the novel coronavirus that was initially identified in India now accounts for about 58% of all COVID-19 ...

The US economy's immediate prospects appear inextricably tied to how the wave of infections and hospitalizations set off by the Delta variant of Covid-19 plays out. While it seems unlikely that the ...

The COVID-19 pandemic was the third leading cause of death globally in 2020 and the second in 2021, according to a recent World Health Organization report. The almost 13 million lives lost during ...

The coronavirus has come a long way since 2020. While the days of sanitizing Amazon packages and standing six feet apart may feel like they’re behind us (and they very well may be), the SARS-Co-V-2 ...

In a recent study published in the Frontiers in Immunology Journal, a group of researchers examined the immune response and potential cross-protection in hospitalized patients with breakthrough ...