Menu Close

Articles on Vaccines

Displaying 201 - 220 of 789 articles

September 11, 2021 marks the 18 month anniversary of the WHO declaring the COVID-19 outbreak a pandemic. summerphotos/Stock via Getty Images Plus

18 months of the COVID-19 pandemic – a retrospective in 7 charts

A lot has happened since the WHO declared the coronavirus outbreak a pandemic. A portrait in data highlights trends in everything from case counts, to research publications, to variant spread.
The huge number of active coronavirus infections offers plenty of opportunity for mutations to occur and new variants to arise. Eoneren/E+ via Getty Images

Massive numbers of new COVID–19 infections, not vaccines, are the main driver of new coronavirus variants

When the coronavirus copies itself, there is a chance its RNA will mutate. But new variants must jump from one host to another, and the more infections there are, the better chance this will happen.
SARS-CoV-2 variants have also played an integral part in driving the course of the pandemic. Shutterstock

COVID-19: It’s time to look at the finer details of South Africa’s pandemic picture

Communities with high vaccine coverage rates are likely to see lower case numbers, hospitalisations and deaths related to COVID-19 compared to those with poor vaccine coverage.
mRNA technologies for vaccine production is gaining more prominence Lulama Zenzile/Die Burger/Gallo Images via Getty Images

Messenger RNA: how it works in nature and in making vaccines

Thanks to the collaborative efforts of governments, funding agencies, academia, biotech and pharmaceutical companies, large-scale manufacturing of mRNA drug products is becoming a reality.
By better communicating how vaccines boost the immune system’s long term “memory”, manufacturers could address vaccine hesitancy. i_am_zews/Shutterstock

COVID-19 vaccines produce T-cell immunity that lasts and works against virus variants

Cell-mediated immunity is particularly effective at eradicating viruses, and more durable. This is important in the fight against COVID-19.
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.

Top contributors

More