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Articles on Vaccines

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A little more than 8% of vaccinated people in the U.S. have received the Johnson & Johnson vaccine. SOPA Images/Contributor/Light Rocket via Getty Images

Do I need a booster shot if I got the Johnson & Johnson vaccine? A virologist answers 5 questions

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?
FDA approval of Pfizer’s COVID-19 vaccine may boost vaccination rates among those who have been hesitant to get the shot. (AP Photo/Jessica Hill)

Pfizer’s COVID-19 vaccine now has full FDA approval. Here’s what that means for unvaccinated people, organizations and pharma

The U.S. FDA has approved the first COVID-19 vaccine. How is approval different from emergency use authorization, and what difference will it make to a vaccine that’s already in global use?
Studying trends in public adverse event reporting could help researchers address vaccine hesitancy and misinformation. Pict Rider/iStock via Getty Images Plus

Unverified reports of vaccine side effects in VAERS aren’t the smoking guns portrayed by right-wing media outlets – they can offer insight into vaccine hesitancy

Anti-vaccine activists are using the side effect reporting system to spread fear and misinformation about the COVID-19 vaccines. But the database could also be used as a gauge for public concerns.
The children’s book, Little Louis, tells the story of a young boy preparing for his COVID-19 vaccination. (Morning Star Lodge)

Indigenous children’s book ‘Little Louis’ aims to curb COVID-19 vaccine hesitancy with a culturally relevant story

There is an urgent need to combat historically fuelled vaccine hesitancy within Indigenous communities. The best way to do this is through evidence-based knowledge and community-led work.
Cancer and organ transplant patients, people with untreated HIV and people with other immunodeficiencies are at high risk of severe COVID-19 infection. burakkarademir/E+ via Getty Images

Immunocompromised people make up nearly half of COVID-19 breakthrough hospitalizations – an extra vaccine dose may help

People with weakened immune systems are at a high risk of severe and prolonged COVID-19 infections. An extra vaccine dose can bolster protection.
A man reacts as he gets a shot of the one-dose Sputnik Light vaccine at a mobile vaccination station in St. Petersburg, Russia. (AP Photo/Elena Ignatyeva)

Making sense of COVID-19 vaccine hesitancy in Russia: Lessons from the past and present

Coverage of Russian vaccination rollout has focused largely on concerns about ethics of development and inconsistent messaging. But Russian-language research complicates this picture.
Vaccine efficacy statistics are often based on the results of randomized controlled trials. (Art-Aleatoire.com)

How effective are COVID-19 vaccines? Here’s what the stats mean … and what they don’t

Vaccine efficacy is usually expressed as a percentage, but what is it actually measuring? Statisticians explain what the numbers mean, and what they say about how well a vaccine can protect us.
A high school student gets his COVID-19 shot at a pop-up vaccine clinic at a public charter school in Los Angeles. Al Seib / Los Angeles Times via Getty Images

Shutting down school vaccine clinics doesn’t protect minors – it hurts people who are already disadvantaged

For decades, US schools have been common sites for vaccine clinics to respond to outbreaks and provide catch-up immunizations. So why are they suddenly controversial?

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