When the Delta variant was dominant in the United States, both vaccination and prior infection helped protect against Covid-19, but vaccination was the safest way to be protected, according to a study ...

COVID-19 vaccination during pregnancy reduces adverse events and preterm birth risks, irrespective of the variant. Data from the Canadian Surveillance of COVID-19 in Pregnancy program showed ...

A new preprint study suggests that Moderna’s COVID-19 vaccine may be significantly more effective against symptomatic disease from the delta variant compared to Pfizer-BioNTech’s vaccine, while the ...

Moderna on Tuesday released preliminary data indicating its vaccine is likely to hold up against several variants of concern, including the Delta variant. Moderna on Tuesday released preliminary data ...

A new study suggests people vaccinated against COVID-19 can still easily spread the delta variant among households just as likely as people who are unvaccinated. The United Kingdom-based study was ...

MEMPHIS, Tenn. — The seven-day average of COVID-19 cases reported per day in Shelby County has more than doubled over the past few days, and local health officials blame the Delta variant of the virus ...

A: Just like with adults, UIHC is seeing a significant increase in pediatric patients testing positive for COVID-19. So far, Wellington said, there is no indication the disease caused by the delta ...

Covid-19 vaccination rates are down and cases are on the rise, exacerbated by the more transmissible Delta variant -- and an expert says the key to winning the race against the spread is getting more ...

As the rampant delta variant of Covid threatens the post-pandemic travel and tourism rebound, there's growing acceptance of so-called vaccine passports among a one-hesitant U.S. public and of ...

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