Covid-19: Pfizer's vaccine comes from a "small study, but it shows promise"
Audio 04:42
The announcement by the Pfizer and BioNTech laboratories of a 90% effective vaccine against the coronavirus, Monday, November 9, has sparked many enthusiastic reactions.
AFP / Timothy A. Clary
By: Clémentine Pawlotsky
6 min
The announcement by Pfizer and BioNTech laboratories that a vaccine against Covid-19 reduced the risk of falling ill with the virus by 90% aroused immense hope around the world on Tuesday and many enthusiastic reactions.
But Catherine Hill, epidemiologist and researcher at the Gustave Roussy Cancer Institute, calls for caution, because the study on which this announcement is based is "too small", although the vaccine is "promising".
Coronavirus
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United States
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