FOR IMMEDIATE RELEASE Contact: Abie Rohrig, media@1daysooner.org 240 Dutch have already expressed interest in volunteering to be deliberately exposed to the coronavirus with 1Day Sooner, a non-profit advocating for vaccine volunteers LEIDEN, NL – Researchers at the Leiden University Medical Center (LUMC) are preparing for a potential COVID-19 “human challenge trial,” in which willing volunteers would be deliberately exposed to the coronavirus under controlled conditions to test vaccines and study the disease.