KNTV NBC Nightly News With Lester Holt October 22, 2021 01:38:00
>> 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 aft...
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