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Articles on Clinical trials

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President Joe Biden tested positive for COVID-19 on July 21, 2022, but was reportedly feeling well enough to work and take calls, as seen in this photo released by the White House. Adam Schultz/The White House via AP

Biden tests positive for COVID-19: An infectious disease doctor explains the risks and treatments available for the 79-year-old president

According to a letter from Biden’s doctor, the president has a runny nose, mild fatigue and a slight cough. The letter also noted that Biden began taking an antiviral drug the morning he tested positive.
Dozens of coronavirus vaccines are in clinical trials in the U.S. Joao Paulo Burini/Moment via Getty Images

Will new vaccines be better at fighting coronavirus variants? 5 questions answered

Existing coronavirus vaccines are not as effective against newer variants of the virus. Two vaccine experts explain how new vaccines currently in development will likely offer better protection.
People getting vaccinated may still have questions about COVID-19 vaccines, like why it takes two doses — and then two weeks — to take full effect. THE CANADIAN PRESS/Ryan Remiorz

I work at a COVID-19 vaccine clinic. Here’s what people ask me when they’re getting their shot — and what I tell them

A medical student answers questions he gets asked at a COVID-19 vaccine clinic: Efficacy versus real-world effectiveness, immune response and how the mRNA vaccines compare to vaccines already in wide use.
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?
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.
Crystal jellyfish contain glowing proteins that scientists repurpose for an endless array of studies. Weili Li/Moment via Getty Images

From CRISPR to glowing proteins to optogenetics – scientists’ most powerful technologies have been borrowed from nature

Three pioneering technologies have forever altered how researchers do their work and promise to revolutionize medicine, from correcting genetic disorders to treating degenerative brain diseases.
Information on COVID-19 vaccines for pregnant or breastfeeding individuals has been inconsistent and hard to find. (AP Photo/Charles Krupa)

Should I get the COVID-19 vaccine while pregnant or breastfeeding? Experts explain the safety, evidence and clinical trials

Exclusion from clinical trials, lack of data and inconsistent information made it difficult for pregnant and breastfeeding people to make decisions about COVID-19 vaccines early in the rollout.

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