FOR IMMEDIATE RELEASE Contact: Abie Rohrig, UK Greenlights World’s First COVID-19 Human Challenge Study Over 3,500 Brits have expressed interest in a COVID-19 challenge study with 1Day Sooner LONDON, UK- Regulators at the Health Research Authority have greenlighted the world’s first COVID-19 human challenge trial , in which volunteers will be deliberately exposed to the coro navirus to accelerate scientists’ knowledge of the coronavirus and pave the way to advance rapid development of vaccines.