Americans who got the updated COVID-19 booster shots are better protected against symptomatic infection than those who haven’t — at least for now, U.S. health officials said Tuesday.

Updated boosters rolled out by Pfizer and rival Moderna in September have been a hard sell for vaccine-weary Americans. Only about 13% of U.S. adults so far have gotten a “bivalent” shot that targets the omicron strain and the original coronavirus. On Tuesday, White House officials announced a renewed push for more Americans to get the latest shots.

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