On the horizon: A new omicron-focused version of the Moderna vaccine that may offer longer protection and a stronger immune response.
The CDC recommends the second booster for those over 50 who received their initial booster shot at least four months earlier.
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Katelyn Jetelina, University of Texas Health Science Center at Houston
New data on the second booster suggests the older you are, the more you need it.
A little more than 8% of vaccinated people in the U.S. have received the Johnson & Johnson vaccine.
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It has been six months since the Johnson & Johnson vaccine received emergency use authorization. What does six months of data show about its efficacy, side effects and protection from variants?
Full FDA approval of the COVID-19 vaccines may help people feel more secure in its safety and effectiveness.
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Ongoing tracking is meant to spot very rare risks – like the connection between the Johnson & Johnson shot and Guillain-Barré syndrome. And it relies on public reporting.
Though drug recalls are relatively uncommon in the U.S., reduced inspections increase the likelihood of manufacturing errors that slip through the cracks.
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COVID-19 has exacerbated a backlog of domestic and foreign drug manufacturing inspections that the FDA is still too short-staffed to adequately deal with.
People line up at a mass vaccination centre during the COVID-19 pandemic in Mississauga, Ont.
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Canadian public health organizations have run into a serious communication problem about the AstraZeneca vaccine. Crisis management and communication theories explain what’s gone wrong.
A dose of the one-shot Johnson & Johnson COVID-19 vaccine is prepared at a vaccination event at Baldwin Hills Crenshaw Plaza in South Los Angeles on March 11, 2021.
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The CDC and FDA said the benefits of the Johnson & Johnson vaccine far outweigh the low risk of developing rare blood clots and lifted a pause on the vaccine’s use. A doctor explains.
At the end of 2020, India applied to the WTO for a temporary suspension of intellectual property rights related to Covid-19.
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Licensing agreements between pharmaceutical companies and the Medicines Patent Pool, in cooperation with the WHO, could accelerate access to doses for the poorest countries.
It’s not a bad sign if you feel fine after your COVID-19 shot.
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Both the AstraZeneca and Johnson & Johnson vaccines are now being investigated for links to rare blood disorders.
Vials of the Johnson & Johnson vaccine to prevent COVID-19. The use of this particular vaccine has been halted temporarily.
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The one-dose vaccine developed by Johnson & Johnson is temporarily halted because of potentially serious blood clots seen in six women. An immunologist explains what this means for you.
Millions of people, particularly older ones who have been isolated from children and grandchildren, can fly domestically at low risk now, the CDC says.
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New CDC guidance permits domestic travel for fully vaccinated individuals, as long as social distancing is respected. International travel guidelines are different.
A sign shows the way to a recovery area to monitor any immediate side effects from the COVID-19 vaccine on Dec. 17, 2020, in Reno, Nevada.
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Many people never experience the least bit of discomfort from the COVID-19 vaccines, but mild side effects are common. They include swelling in the affected arm, nausea and chills.
Divisions among Catholics have created doubts about the moral acceptability of one of the COVID-19 vaccines. An expert explains why there isn’t one ‘Catholic view’ on the issue.
A COVID-19 vaccine is administered at a clinic at Olympic Stadium in Montréal on March 1, 2021, marking the beginning of mass vaccination in the Province of Québec based on age.
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With four COVID-19 vaccines approved for use in Canada, it’s time to answer FAQs about efficacy, immunity, eradication and variants.
Nurse Nicole Chang celebrates after receiving one of the first injections of the COVID-19 vaccine Dec. 16 at Ronald Reagan UCLA Medical Center in Westwood, California.
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Millions of vaccinated people have been waiting for guidelines on what they can do safely. The CDC says it’s OK to gather with other vaccinated people, but it’s still best to avoid travel.
Nurse Natalie O'Connor loads syringes with the Moderna COVID-19 vaccine in February 2021.
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Researchers are closely watching the coronavirus mutants to make sure vaccines can be adjusted if necessary. But scientists don’t know whether vaccines will be effective in those already vaccinated.