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Where did COVID-19 come from? Elizabeth Weise and Karen Weintraub, USA TODAY © Menahem Kahana, AFP via Getty Images A Horseshoe bat hangs from a net inside an abandoned Israeli army outpost next to the Jordan River in the occupied West Bank, on July 7, 2019. The coronavirus that conquered the world came from a thumb-sized bat tucked inside a remote Chinese cave. Of this much, scientists are convinced.   Exactly how and when it fled the bat to begin its devastating flight across the globe remain open questions.  In just one year, SARS-CoV-2, the virus that causes COVID-19, has infected 100 million people and killed 2 million, 400,000 of them in the U.S. Answers could stop such a calamity from happening again.

United statesNew yorkWest bankGrand central terminalMailman school of public healthColumbia universityJordan riverIsrael generalSan franciscoArek ratajStephen morseDake kangAnthony fauciMaciej boniMenahem kahanaMike ryan