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the pfizer and the sinovac. they found that a sinovac by a distance was way less effective. astrazeneca and pfizer -- sinovac was nine times less likely to stop death. so the data we have so far, which is out of china, which, you know, we don't get good data in china, shows that that's not a very effective vaccine. >> all right. for now we will leave it there. good to see you, doctor, as always and to lean on your expertise as we enter a new phase of this pandemic. appreciate it. >> thank you, paula. a ceasefire that existed only really on paper is followed by full-blown fighting in ukraine. still ahead, reports of new strikes right across the country after a day when moscow promised to keep its guns silent. the burning, itching. the pain. emerge tremfyant®. with tremfya®, most people saw 90% clearer skin at 16 weeks. the majority of peopople saw 90% clearer skin evenen at 5 years.