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What are the different tests for COVID-19 and how do they work?

Nearly a month ago, on March 10, the U.S. had about 1,000 confirmed cases of COVID-19. Today, on April 7, the nation has a little over 12,000 confirmed deaths from the disease. What started out as an outbreak localized to one country has turned into a pandemic that has taken siege to at least 209 countries and territories and about 81,000 lives across the globe. Read more