This is one of the arguments of people opposed to vaccination against Covid-19: vaccines would not prevent catching the disease and would not really limit the risk of transmitting the SARS-CoV-2 coronavirus to those around them. , since these vaccines are not sterilizing. But what is the real impact of vaccination in France? This is what researchers from the University of Montpellier, accompanied by colleagues of the University Hospital of Nîmes and Caen sought to know.
Their study, pre-published for now, indicates that as of August 20, 39,100 stays in intensive care (margin of error between 26,100 and 57,100) and 47,400 hospital deaths (margin of error between 36,200 and 62,800) were avoided thanks to the French vaccination campaign. “From here the end of the year, the median estimates are respectively 67,000 stays in intensive care and 78,700 deaths avoided thanks to the vaccination “project the researchers.
To reach this conclusion, the researchers relied on on the critical care admissions figures and the number of deaths and compared them with an “invented” curve based on the contact rate, the transmissibility of variants and climatic variations, in a scenario where no one would have been vaccinated since January.
14 times less likely to be hospitalized
In mid-August, a study by the Los Angeles health authorities (in the United States) went in the same direction, saying that vaccination against Covid-19 significantly reduces the risk of developing a severe form of the disease. To reach this conclusion, the American researchers analyzed medical data relating to nearly 1.3 million cases of Covid-19 occurring in the state of California. First info: a fully vaccinated person (with 2 doses for most vaccines, therefore) is about 4 times less likely to be infected with the coronavirus than a non-vaccinated person.
Second info: people fully vaccinated against Covid-19 are 14 times less likely to be hospitalized compared to those who are only partially, or not at all. Thus, specialists have counted less than one hospitalization per 100,000 inhabitants among those vaccinated, and almost no deaths.
“The objective of these vaccines against Covid-19 is to limit the risk of developing a serious form of the disease: it is a” shield “, in particular for the most vulnerable people but not only” us explained Prof. Michel Cogné, professor of immunology at Rennes University Hospital, in February 2021.
Sources:
- Quantifying the real-life impacts of vaccination on critical COVID-19, OSF pre-print, August 2021
- Fully Vaccinated People are Four Times Less Likely to Get Infected with COVID-19 and 14 Times Less Likely to Be Hospitalized, Los Angeles Public Health, August 2021
Read also :
- Adolescents (12-17 years old): which vaccine against Covid? what parental authorization?
- 3rd dose of vaccine: for whom? When ?
- What is reactive vaccination, the strategy recommended by HAS to limit variants?
