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Johnson & Johnson to Seek F.D.A. Authorization for Booster Shot

The request, expected this week, comes after a study found the company’s vaccine was only 71 percent effective against hospitalization from Covid-19.

Johnson & Johnson to Seek F.D.A. Authorization for Booster Shot

The request, expected this week, comes after a study found the company’s vaccine was only 71 percent effective against hospitalization from Covid-19.

F.D.A. Panel to Weigh Pfizer Shots for Children, Boosters for Moderna and Johnson & Johnson Recipients

The timing of the meetings later this month suggests that the agency plans to move quickly to decide both issues.

Boosters for Moderna and Johnson & Johnson vaccine recipients weren’t up for debate during a C.D.C. panel.

The panel was not asked to judge whether people who received the Moderna and Johnson & Johnson vaccines should receive Pfizer-BioNTech boosters.

Moderna vs. Pfizer: Both Knockouts, but One Seems to Have the Edge

A series of studies found that the Moderna vaccine seemed to be more protective as the months passed than the Pfizer-BioNTech vaccine. Here’s why.

Health Officials Advise White House to Scale Back Booster Plan for Now

Federal regulators warned on Thursday they may not have enough data to recommend boosters for anyone except certain recipients of the Pfizer vaccine by late September.

Health Officials Advise White House to Scale Back Booster Plan for Now

Federal regulators warned on Thursday they may not have enough data to recommend boosters for anyone except certain recipients of the Pfizer vaccine by late September.

An Experimental H.I.V. Vaccine Fails in Africa

Researchers ended a large trial in South Africa after finding that an experimental vaccine offered little protection.

Biden Falls Short on Pledge for U.S. to Be the World’s Vaccine ‘Arsenal,’ Experts Say

Congress appropriated $16 billion to ramp up Covid-19 countermeasures, but a new report found that the Biden administration had spent very little of it on expanding vaccine manufacturing capacity.

What to Know About Boosters if You Got the Johnson & Johnson Vaccine

A second dose of the vaccine appears to provide additional protection, and health experts say that boosters will likely be recommended.

F.D.A. to Authorize Third Vaccine Dose for People With Weak Immune Systems

The decision to expand the emergency use of both the Pfizer-BioNTech and Moderna vaccines is meant to help transplant recipients and others whose immune systems are similarly compromised.

New data suggest J. & J. vaccine works against Delta and recipients don’t need a booster shot.

The study is the first real-world test of the vaccine’s efficacy against Delta, a highly contagious variant of the virus surging across the United States and much of the world.

F.D.A. Aims to Give Final Approval to Pfizer Vaccine by Early Next Month

The Food and Drug Administration’s move is expected to kick off more vaccination mandates for hospital workers, college students and federal troops.

U.S. Authorities Seek Documents From Troubled Covid Vaccine Manufacturer

Emergent BioSolutions, which ruined 75 million vaccine doses at its Baltimore plant, disclosed records requests from Congress and federal and state law enforcement agencies.

Some Are Chasing Extra Vaccine Shots, While Scientists Debate

Boosters may not be necessary yet, many experts say, and the pursuit of additional shots raises ethical questions.

Biden Officials Now Expect Vulnerable Americans to Need Booster Shots

The growing consensus that at least some Americans will need a booster is partly tied to research suggesting that Pfizer’s vaccine is less effective after about six months.

Drug Distributors and J.&J. Reach $26 Billion Deal to End Opioid Lawsuits

The agreement would allow funds to begin flowing from the companies to states and communities to pay for addiction and prevention services.

J.&J. Vaccine May Be Less Effective Against Delta, Study Suggests

Many who received the shot may need to consider boosters, the authors said. But federal health officials do not recommend second doses.