British study: Booster vaccines provide 70% -75% protection against Omicron

Boosting doses of Covid vaccines improve protection by up to 75% against the new Omicron variant of the coronavirus, according to preliminary research in the United Kingdom.

AstraZeneca and Pfizer-BioNTech two-dose vaccines provide much less strong defenses against symptomatic Omicron infection than previous forms of the virus, with booster doses increasing protection to 70% to 75%, even in the first days after according to Bloomberg.

UK health officials say the Omicron mutation will be dominant in the country by mid-December.

New data show that the mutation is gaining ground much faster than Delta in England and Omicron cases are expected to account for 50% of Covid-19 cases by the middle of the month.

The effectiveness against a serious illness is expected to be even higher than 70% -75%, which concerns the manifestation of even mild symptoms, the British government notes.

The UK has relied mainly on the Pfizer vaccine for booster doses, and fills in gaps with the Moderna vaccine. Many people in the UK have received the AstraZeneca vaccine for the first two doses.

The analysis was performed on a group of 581 people diagnosed with Covid-19 of the Omicron mutation, with authorities noting that a larger sample was needed to draw conclusions.

Christmas Eve cases in the UK they may have reached 60,000 a day.