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Coronavirus: What you need to know

Biochemist Daniela Beatriz Ori manipulates swab samples to make a real time polymerase chain reaction (RT-PCR) analysis for COVID-19 testing at the biochemistry lab of Central Navy Hospital Dr. Pedro Malloon April 28, 2020 in Buenos Aires, Argentina. (Photo by Amilcar Orfali/Getty Images)
Heavy snow falls as people wearing face masks to curb the spread of COVID-19 cross a road in Burnaby, B.C., on Monday, December 21, 2020. THE CANADIAN PRESS/Darryl Dyck
People walk past a "we're open, heated terrace dining" sign at Eli's Essentials on the Upper East Side on February 02, 2021 in New York City. (Photo by Alexi Rosenfeld/Getty Images)
Mother putting a face mask on her daughter. (August de Richelieu/ Pexels)

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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.

Colin Powell dies, exemplary general stained by Iraq claims

Colin Powell, the trailblazing soldier and diplomat whose sterling reputation of service to Republican and Democratic presidents was stained by his faulty claims to justify the 2003 U.S. war in Iraq, died Monday of COVID-19 complications. He was 84.