AB: 'mRNA Covid vaccines offer essentially no defense against Omicron only months after a booster shot, according to a major new study from British researchers. Both antibody and T-cell protection are nearly non-existent, the scientists found.
'In an even more worrisome development, when vaccinated but previously uninfected people suffer breakthrough Omicron infections, their T-cell response is biased toward earlier versions of Sars-Cov-2 - not to the Omicron variant that has actually infected them. In other words, the mRNA shots appear to permanently wrongfoot the immune systems of people who receive and bias them toward producing T-cells to attack variants that no longer exist - even though they never were infected with those variants at all.'
Commentaires