Celebrities, world leaders and philanthropists pledged some 7.4 billion euros ($8.1 billion) on Monday for research into coronavirus vaccines, treatments and testing during an EU-led videoconference that was snubbed by the United States.
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In This Story: EU
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In This Story: Vaccine
A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.