La vaccination restreindrait donc la réponse immunitaire ? Un nombre croissant d’études montrent que des vax-inés sont plus susceptibles d’être infectés par des variants qui ont émergé ces derniers mois …
Des chercheurs de l’Université de Washington aux États-Unis ont séquencé des échantillons de 20 agents de santé qui ont ensuite contracté le Covid après avoir reçu les deux doses du vaccin Pfizer ou Moderna.
L’étude a montré que tous les 20 étaient infectés par des variants préoccupants, avec des charges virales transmissibles …
Telegraph.co.uk : Fully vaccinated people who catch Covid variants may pass virus on, study finds
Fully vaccinated people infected with Covid variants may be likely to pass the virus on, researchers have said.
No vaccine is 100 per cent effective, and while the number of people who contract Covid after vaccination – known as post-vaccine breakthrough cases – is tiny, a growing number of studies show that these cases are more likely to be infected with variants that have emerged in recent months.
Researchers at the University of Washington in the United States sequenced samples from 20 health workers who went on to contract Covid after receiving both doses of either the Pfizer or Moderna vaccine.
The study showed that all 20 were infected with variants of concern that have been driving second waves of Covid in many parts of the world – eight had the UK variant, one the South African variant, 10 had one of the two California variants and one had the Brazilian variant.
The researchers then compared the samples collected from this group with samples collected from 5,174 non-vaccinated individuals who had Covid.