Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the delta and omicron ...

Prior COVID-19 vaccination did not stop the immune system from mounting a protective response to the Delta and Omicron ...

Health Secretary Robert F. Kennedy Jr. announced the decision without waiting for an agency advisory panel to vote.

One dose of vaccine is not enough to protect against the Delta and Beta variants, new research suggests, and even people who have had Covid-19 should be immunized. transcript The Centers for ...

This is one of a series of articles in which reporters from WHYY’s Health Desk Help Desk answer questions about vaccines and COVID-19 submitted by you, our audience. With the delta variant of the ...

The Free Press found answers to some of the biggest questions people have now about the new guidelines, the mandates, the vaccines and the variant. Here's what you need to know: Is the delta ...

Flush with the world’s best Covid-19 vaccines, America could have inoculated its way out of the pandemic. But as the highly virulent delta variant has rampaged through a half-vaccinated country ...

Delta Air Lines is requiring new employees to get the Covid-19 vaccine, making it one of the largest US companies to issue a mandate. “Any person joining Delta in the future we will mandate to ...

When it comes to getting the most out of a vaccine, arm consistency can make a difference. Some studies suggest that getting a booster in the same arm as the initial shot can boost the immune system’s ...