Les adultes de plus de 50 ans et ceux de 18 ans et plus qui sont immunodéprimés peuvent recevoir une quatrième dose du vaccin COVID-19 de Pfizer ou de Modernas.
La demande de Pfizer pour les enfants les plus jeunes devrait suivre. Mais il y a beaucoup de pièces mobiles, et les familles comme les médecins craignent que la FDA n'agisse pas assez vite.
L'entreprise prévoit de soumettre les données du rappel pour une autorisation d'utilisation d'urgence de la FDA dans cette population dans les prochains jours.
Les 17 millions d'Américains qui ont reçu le vaccin COVID-19 de Johnson & Johnson en une seule fois sont moins protégés contre les maladies graves et les hospitalisations que les personnes qui ont reçu un vaccin à ARNm.
Les résultats d'une enquête suggèrent un manque d'enthousiasme des professionnels de santé et du grand public pour une dose supplémentaire de vaccins COVID.
Les 6 premiers mois de données américaines après près de 300 millions de doses montrent des résultats conformes aux essais cliniques et à la surveillance précoce après l'autorisation des vaccins.
Au Royaume-Uni, un homme s'est vu administrer un vaccin COVID-19 en guise de traitement après avoir été testé positif au coronavirus pendant plusieurs mois.
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