schultz. on putin s war in ukraine, on whether ukraine and russia should start talking about a peace deal and about the future of europe itself. and chevron ceo mike worth on the present and future of oil which still powers our world. also, just where did covid come from? the so-called lab leak theory just got new life this week. we ll follow the facts with dr. lena wynn. but first, here s my take. we are often told that america is deeply divided, that polarization makes it impossible for us to make any progress in policy, that our country is so internally conflicted it cannot
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tuesday on covid shots for younger children, pfizer has announced that its vaccine is over 90% effective in preventing symptomatic covid in children between the ages of 5 and 11. and that could be a decisive piece of data in approving shots for kids and a potentially major turning point in the pandemic. at the same time, tens of millions of americans now have access to booster shots. health experts are encouraging any adult who got a johnson & johnson shot at least two months ago to re-up their vaccine, and not necessarily with the same regimen. the cdc has ok d mixing and matching the available vaccines, meaning that the same group of johnson & johnson recipients can also choose to take either moderna or pfizer booster. cnn medical analyst dr. elena wynn joining us from baltimore. what would covid shot for kids mean for the future of the pandemic? let s address them first.