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Covid-19: Is Janssen's single-dose vaccine less effective than others?


DECRYPTION - A significant portion of patients vaccinated in intensive care appears to have received this product. Health authorities have been recommending a 2nd dose of RNA vaccine since the end of August.

It's a new shock in the small world of Covid-19 vaccines. In its latest surveillance report, the French Medicines Agency (ANSM) noted “

a significant number of cases of vaccine failure with the Janssen vaccine

”. A total of 32 cases of Covid-19 infection have been observed in people who have received this vaccine, including 29 severe cases requiring hospitalization and 4 deaths. “

Among these people, several were very old and many had comorbidities (diabetes, hypertension, obesity, Editor's note), yet we know that the vaccine efficacy is lower in this case. Maybe these people responded poorly to the vaccine

», Asks Professor Daniel Floret, vice-president of the Technical Commission for Vaccinations at the High Authority for Health (HAS).

To discover

  • Covid-19: the third vaccine dose, instructions for use

Among the vaccinated patients hospitalized in intensive care (which remain a very small minority compared to the unvaccinated, it should be remembered), two hospitals have also reported an abnormally high number of

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Source: lefigaro

All tech articles on 2021-09-14

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