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UK coronavirus variant could become dominant US strain by March, CDC saysStrict measures will be needed to prevent it from taking over.
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How does impeachment work?Will President Trump be impeached? Here's a look at what impeachment means, how it works and who has been impeached.
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What is a coup?A coup d'état, which translates as "stroke of the state," can be triggered by military actions, the involvement of foreign governments, or popular revolts.
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1st wild animal in US infected with SARS-CoV-2 found in UtahA wild mink just tested positive.
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When will COVID-19 vaccines start to make a difference?A new model projects how case rates, hospitalizations and deaths will fall as COVID-19 vaccinations begin.
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COVID-19 may have arrived in US by December 2019Researchers studied blood samples from December 2019, and found a small number tested positive for antibodies against the virus.
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US tops 10 million coronavirus casesThe country's total now stands at just over 10 million, according to Johns Hopkins University.
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What happens if a president loses an election but won't leave the White House?President Donald Trump might win the election. But if he fails — if Biden is elected, and Trump makes good on his threat to not peacefully transfer power — what happens?
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US reaches staggering milestone — 200,000 COVID-19 deathsIt took eight months to reach 200,000 deaths.
