HealthCoronavirus How Infecting Volunteers On Purpose Might Help Fight Against COVID Volunteers are taking part in human challenge studies in the United Kingdom to help determine which COVID vaccine works best. Prev Next By: Kristy Schantz Posted ShareCopy linkFacebookNextdoorXThreadsRedditLinkedInEmailWhatsAppMessengerPrint Add Scripps News as a Google Preferred Source Most Recent Interactive: Did you buy this recalled Whole Foods supplement? Whole Foods Ashwagandha capsules recalled over possible salmonella contamination Kelly Broderick Big oil’s profits soar as Iran War keeps drivers paying more at the pump Maura Barrett Health FDA eyes update to baby formula nutrition requirements for first time in decades Brenda Goodman Parents can now get Meta alerts about teens’ suicide, self-harm searches Kelly Broderick The hidden costs of pregnancy loss: Bills totaling tens of thousands Alexandra Miller Join the 'Morning Rush' team every weekday at 7 a.m. ET About Scripps News Download the Scripps News app.