While people who have been vaccinated occasionally still contract the coronavirus, experts say the shots dramatically reduce the disease's severity. The best indicator: In the U.S., hospitalizations and deaths are nearly all among the unvaccinated.
And politicians in the nation’s capital are being rattled by reports of breakthrough cases, including from a congressman, Florida Republican Vern Buchanan; some Texas Democraticvisiting Washington as a political protest; at least two people in the White House and several congressional staff members.
But different places have different rules. In Britain, Prime Minister Boris Johnson -- who survived COVID-19 early in the pandemic and now is fully vaccinated -- beganover the weekend after contact with someone experiencing mild symptoms from a breakthrough infection. There isn’t a separate count of mild or asymptomatic breakthroughs, although CDC is tracking those through studies such as one that gives weekly virus tests to more than 5,000 essential workers, she told senators.
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