Categories Articles U.K. Plans ‘Challenge Trials,’ Which Will Intentionally Give People COVID-19 to Test Vaccines Post author By crystalg Post date October 21, 2020 TIME Tags challenge, COVID19, Give, intentionally, people, Plans, test, trials, U.K., vaccines ← Climate change already wiped out the human race — in prehistoric times → Whole Foods now offers free one-hour grocery pickup at all US stores