FDA recommends vaccine makers update Covid-19 shots to target Omicron
The Food and Drug Administration is advising vaccine makers to reformulate their Covid-19 shots to target the BA.4 and BA.5 Omicron subvariants as well as the original strain of the virus, the agency announced Thursday, as it seeks to provide people with broader protection against the evolving coronavirus.
[...] The FDA had to provide its recommendation this summer so that vaccine makers have enough time to adapt their formulas and manufacture shots should a fall and winter booster campaign be necessary.
[...] The newer forms of the shots will only be offered as boosters, Marks said. The primary series of shots will continue to use the original vaccines
Cette proposition en suit une autre de l’OMS faite 2 semaines plus tôt.
the WHO’s position is that the goal of updating the vaccines isn’t to try to keep up with the evolving virus — an approach that is used with flu vaccines — but rather to expose the immune system to another very different version of SARS-2 to teach it to better recognize and respond to both current and hopefully future strains of the virus.