Experts say Covid-19 vaccinations in the US are going extremely well -- but not enough people are yet protected and the country may be at the start of another surge. The US reported a record over the weekend with more than 4 million Covid-19 vaccine doses administered in 24 hours, according to the CDC. CNN's Polo Sandoval reports.
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Experts say Covid-19 vaccinations in the US are going extremely well -- but not enough people are yet protected and the country may be at the start of another surge.
