Boxer-senator Manny Pacquiao to run for Philippine president

Manny Pacquiao, of the Philippines, speaks at a news conference after his loss to Yordenis Ugas, of Cuba, in a welterweight championship boxing match Saturday, Aug. 21, 2021, in Las Vegas. (AP Photo/John Locher) Manny Pacquiao, of the Philippines, speaks at a news conference after his loss to Yordenis Ugas, of Cuba, in a welterweight championship boxing match Saturday, Aug. 21, 2021, in Las Vegas. (AP Photo/John Locher)

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Why COVID-19 boosters weren't tweaked to better match variants

More COVID-19 booster shots may be on the way -- but when it's your turn, you'll get an extra dose of the original vaccine, not one updated to better match the extra-contagious delta variant. And that has some experts wondering if the booster campaign is a bit of a missed opportunity to target delta and its likely descendants.

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