epidemics

A new CDC study released on Thursday suggests some people may be susceptible to coronavirus reinfection and could have worse outcomes later on.

Moderna said it received “positive feedback” from the FDA on its proposal to increase the number of Covid-19 vaccine doses in each of its vials.

Moderna also said its chief medical officer, Tal Zaks, will leave the company in late September.

The head of the CDC warned on Wednesday that Covid variants “stand to reverse the progress that has been made to control this pandemic.”

Dr. Peter Hotez warned that people should not become complacent due to dropping Covid cases, especially amid reports of B.1.526 spreading in New York.

Moderna said it has shipped to the NIH doses of a new Covid-19 vaccine designed to provide better protection against the variant from South Africa.

President Joe Biden’s Covid czar Jeff Zients said the administration is ready to deliver J&J’s vaccine “without delay” if granted FDA emergency authorization.

“We’ve been in the process of developing a manufacturing process for a vaccine product that we’ve never made before,” Pfizer Chief Business Officer John Young said.

New data suggests that people with Covid-19 can continue to suffer from symptoms for up to nine months after the initial infection, Dr. Anthony Fauci said.

Roughly 40% of people who took J&J’s Covid vaccine reported headaches and just more than 38% reported feeling fatigued, the FDA staff said.

President Joe Biden’s Covid-19 response team is holding a news briefing Wednesday on the coronavirus pandemic.

The FDA’s staff endorsed Johnson & Johnson’s Covid-19 vaccine for emergency use, a critical step in bringing a third shot to the U.S. marketplace.

Connecticut Governor Lamont explains why his state must “do a better job” when it comes to delivering Covid vaccines to underserved communities.

The remarks indicate that the U.S. is on track to have received 240 million doses of vaccine by the end of March, enough to vaccinate about 130 million people.

Here’s why the coronavirus mutates, why some variants are more problemtic than others and what that means for life-saving vaccines.

Dr. Vin Gupta explains why patients should stop weighing the pros and cons of which Covid vaccine is better and get the first shot available ASAP.

Covid vaccine shipments that were delayed by last week’s historic winter storm will be delivered by midweek, White House advisor Andy Slavitt said Monday.

The CDC study said educators “can play an important role in in-school transmission” when physical distancing and mask compliance are not optimal.

President Joe Biden’s Covid-19 response team is holding a news briefing on the coronavirus pandemic.

The FDA said Monday that modified Covid-19 vaccines against new, emerging variants may be authorized without the need for lengthy clinical trials.