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?
Un technicien de laboratoire tient un flacon d’un candidat vaccin contre la Covid-19 dans le cadre d’essais au Centre de recherche Chula sur les vaccins, administré par l’Université Chulalongkorn à Bangkok, en Thaïlande, le 25 mai 2020. AP Photo/Sakchai Lalit

Voici comment fonctionnent les essais cliniques pour les vaccins contre la Covid‑19

Un vaccin contre la Covid-19 sera-t-il sûr ? Les essais sur les animaux et l’humain et la surveillance post-approbation donnent de bonnes raisons de croire qu’un vaccin approuvé sera efficace et sûr.
A lab technician holds a vial of a COVID-19 vaccine candidate during testing at the Chula Vaccine Research Center, run by Chulalongkorn University in Bangkok, Thailand on May 25, 2020. (AP Photo/Sakchai Lalit)

Explainer: How clinical trials test COVID‑19 vaccines

Will a vaccine for COVID-19 be safe? Animal testing, human clinical trials and post-approval surveillance give us good grounds to believe that a future approved vaccine will work and be safe.
As human trials begin for potential COVID-19 vaccines, the ethics of human challenges studies must be considered. (Shutterstock)

Ethics must not be ignored when testing COVID‑19 vaccines

Thousands of people around the world have said they are willing to be exposed to COVID-19 to test new vaccines. Since we don’t fully understand the long-term effects of the disease, is this ethical?

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