VIRUS - VACCINE RESEARCH - AP 4-9-2020 2.jpeg
In this Wednesday, April 8, 2020 photo provided by the Center for Pharmaceutical Research, a pharmacy technologist using a biosafety level 2 hood prepares a COVID-19 coronavirus vaccine candidate for testing in Kansas City, Mo. This early safety study, called a Phase 1 trial, is using a vaccine candidate developed by Inovio Pharmaceuticals. (Center for Pharmaceutical Research via AP)

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