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Pfizer, AstraZeneca, Sinovac … How effective are vaccines against Covid-19?

Oil is rising, a bad sign for the economy

PLAYER – Karl Towns says Covid did not treat him well

Britney Spears’ father must have the legal guardianship of the singer

AstraZeneca expects to have a new vaccine by the end of the year

Chile rectifies and says it will vaccinate irregular migrants after controversy

Robinson Canó is being investigated for a garbage collection contract

The Guatemalan president is asking Congress to reinstate the death penalty

Taylor Swift plagiarizes to regain the authorship of the songs

What does it mean that a vaccine is effective?