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Articles on Moderna vaccine

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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. Patrick T. Fallon /AFP via Getty Images

What COVID-19 vaccine side effects might I expect?

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.
Make that second appointment and get your final dose for full protection. MediaNews Group/Reading Eagle via Getty Images

How effective is the first shot of the Pfizer or Moderna vaccine?

An immunologist explains that you get some protection from the first dose of the mRNA vaccines but you need two to build up strong immunity, particularly to newer coronavirus variants.
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. THE CANADIAN PRESS/Paul Chiasson

COVID-19 vaccine FAQs: Efficacy, immunity to illness vs. infection (yes, they’re different), new variants and the likelihood of eradication

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. Brian van der Brug/Getty Images

Vaccinated and ready to party? Not so fast, says the CDC, but you can gather with other vaccinated people

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.
Vaccinated people are wondering whether they can ease social distancing and mask-wearing. AP Photo/Darko Bandic

Can vaccinated people still spread the coronavirus?

You’ve been vaccinated; can you now safely see your friends and family? New research hints that vaccinated people may be less likely to transmit the coronavirus, but they are not 100% in the clear.
Joe Biden, then president-elect, received his COVID-19 vaccination in December. Joshua Roberts via Getty Images

Can Biden fix the vaccine mess? An expert says yes

The COVID-19 vaccine rollout has fallen far short of President Trump’s promises. President Biden says he can fix that. Can he?
Health-care workers wait in line at a COVID-19 vaccine clinic in Toronto on Jan. 7, 2021. THE CANADIAN PRESS/Nathan Denette

COVID-19 vaccine rollout: Why a mask and social distancing are still needed, even if you get the shot

Rollout of COVID-19 vaccines has begun. But getting the jab doesn’t mean abandoning masks, distancing and handwashing. Here’s why the current preventive measures must continue post-vaccine.
If too many Americans refuse to take the COVID-19 vaccine, achieving population immunity will be difficult. Paul Hennessy/NurPhoto via Getty Images

Americans have unrealistic expectations for a COVID-19 vaccine

Two in five Americans say they don’t want a COVID-19 vaccine, which is a problem. Finding out what Americans do want from a vaccine might help.
The number one scientific breakthrough for 2020: multiple vaccines to prevent COVID-19. Philippe Raimbault/Photodisc via Getty Images

The top scientific breakthrough for 2020 was understanding SARS-CoV-2 and how it causes COVID-19 – and then developing multiple vaccines

The development of multiple vaccines against the virus that causes COVID-19 has been hailed as the breakthrough of 2020. But there were many more supporting discoveries that made this possible.
The pharmaceutical industry opposes the suspension of intellectual property rights on COVID-19 vaccines and treatments, and no pharma companies have yet contributed to the COVID-19 Technology Access Pool. (Shutterstock)

Can a pharma company change? Profit, not altruism, motivates COVID-19 vaccine development

We should applaud drug companies for developing COVID-19 vaccines in record time, but let’s not be under any illusion about the profits that are motivating them.
A nurse prepares a shot for a clinical trial of a COVID-19 vaccine candidate developed by the National Institutes of Health and Moderna Inc., on July 27, 2020 in Binghamton, N.Y. (AP Photo/Hans Pennink, File)

COVID-19 vaccine FAQ: 6 things to look for in clinical trial results

With COVID-19 vaccine announcements making headlines, non-scientists need to know what clinical trial results mean. Here are some key points to look for in vaccine trial reports.

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