Omicron don t necessarily interfere with t cell immunity and if that s the case a good reason for helping that to be rare to see ultimately the reductions in the severity per case. the other issue is that people who ate doesn t look like the booster is providing a substantial increase in antibody levels and the protection against acute disease there are people who have been vaccinated and had covid 19 are probably in some of the best positioned in terms of protection against omicron. to denmark it sjust announced stricter covid measures to battle soaring infection numbers there. the government said they expected daily infections would soon exceed all previous records as the highly transmissible omicron variant combined with and fuelled a wave still largely driven by the previous delta mutation. denmark, which like britain carries out extensive rapid genetic sequencing to detect variants, is second only
Including the highly transmissible delta mutation. there is a much reduced effectiveness against symptomatic mild infection but in a sign of hope the uk study analyzing 600 positive cases, underscored the power of boosters providing 70 to 75% protection against symptomatic protection. there have been over 50 million booster doses administered in the united states. here in the u.s., omicron arrived earlier than initially thought now touching the majority of states so far no deaths and a single hospitalization according to the cdc more than three-quarters of those infected were fully vaccinated, including peter mcginn who was minnesota s first case i felt like it was a cold just because at the time, you know, i m vaccinated i m boosted. the people i was with are vaccinated and boosted and the thought of covid never even crossed my mind states like new
Plus, may be to blame. nbc news correspondent matt bradley has our report from london. tonight, the uk reported more than 50,000 new cases its, highest number in three months, as officials are investigating a new mutation of the virus being referred to as delta plus. overall cases are up 18% in just the past week, deaths have risen by 11%, despite fast and thorough vaccination programs. british doctors now demanding answers and actions. i think i ve learned from, previous mistakes, that we keep making and unfortunately people lives are being lost daily as a result of this. but so far, the government has said it won t impose its so-called plan b. including requiring masks indoors and vaccine passports. instead, they re urging more people over 50 to get booster shots. and say covid s pressure on british systems is still bearable. it remains a threat, we re looking closely at the data it
reporter: well, here in the u.k., that delta mutation formally called ay.4.2 makes up 6% of cases scientists don t know if it s deadlier or more contagious than the original delta. lester all right, matt te word frm buckingham palace that queen elizabeth spent the night in the hospital let s get the latest from molly hunter in london molly, what are palace officials saying reporter: lester, they say the queen went into the hospital yesterday afternoon for what they re calling preliminary investigation. she returned to windsor castle today they say she s in good spirits. this comes after she canceled a trip to northern ireland, a move palace officials said she made reluctantly after doctors urged her to get some rest. but, lester, the queen is 95 years old. we last saw her out tuesday night. she s had an incredibly busy few months and hasn t shown any signs of slowing down until now. lester molly hunter, thank you. in washington, the house voted to hold former trump adviser st