Delta makes it impossible to create flock immunity

A study of virology experts at Oxford University concludes that the Indian - born mutation also spreads from vaccinated to the same degree as the unexcident.

The study finds that the possibility of the full inoculation of Pfizer doses exceeding an infection with consequences is 82% lower than the unexcused and 62% for the immune to AstraZeneca.

Oxford scientists confirm that the effects of vaccinated infection are, in the vast majority of cases, easy, and so far no death cases have been recorded, at least in Great Britain.

Immunity from the current doses is enough to withstand the Delta version, the study estimates.

However, experts say strengthening doses create more security for such a harsh version, which is one more reason to start injecting it this autumn.

At that, the US drug agency FDA confirms that the third dose of Pfizer vaccines creates enough immunity for 6 to 12 months.