Pfizer begins vaccine tests on humans

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Pfizer and BioNTech said Tuesday they have begun delivering doses of their experimental coronavirus vaccines for initial human testing in the United States. Fred Katayama reports.
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Republished. Link to Original Article: http://feeds.reuters.com/~r/reuters/INVideoBusiness/~3/6V3fw8AxnqQ/pfizer-begins-vaccine-tests-on-humans