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Articles on COVID-19 vaccines

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Ever since a 1904 revolt against the smallpox vaccine, Brazil has run extremely successful vaccination programs. Rafael Henrique/SOPA Images/LightRocket via Getty Images

Brazil’s president rejects COVID-19 vaccine, undermining a century of progress toward universal inoculation

A 1904 revolt against mandatory smallpox inoculation taught Brazilian health officials a deadly lesson on how to vaccinate a skeptical public. Today President Bolsonaro seems to ignore that history.
Tony Potts, a 69-year-old retiree, removes his face mask for a temperature check just before receiving his first injection in a phase 3 COVID-19 vaccine clinical trial sponsored by Moderna. Potts is one of 30,000 participants in the Moderna trial. Paul Hennessy/NurPhoto via Getty ImageS

What are emergency use authorizations, and do they guarantee that a vaccine or drug is safe?

The vaccines that will first be used to prevent the spread of COVID-19 will have gone through a special approval process with the FDA. but just what is this expedited process?
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.
The drug maker company Pfizer says its COVID-19 vaccine is 95% effective with no serious side effects. Eduardo Munoz Alvarez/VIEW press/Corbis News via Getty Images

Coronavirus vaccines: health experts identify ways to build public trust

The United Nations recently asked a group of experts across the world to recommend ways to persuade people to take a COVID-19 vaccine. Here is a summary of their suggestions.
Mink can be readily infected with SARS-CoV-2 and then pass the virus to humans. (Shutterstock)

The mink link: How COVID-19 mutations in animals affect human health and vaccine effectiveness

In the disturbing scenario of human-to-mink-to-human COVID-19 transmission, the virus may mutate in mink prior to re-infecting people. That possibility makes vaccine design even more crucial.

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