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