Home Business Moderna expects mid-stage trials for COVID-19 vaccine to begin shortly Business Moderna expects mid-stage trials for COVID-19 vaccine to begin shortly By Genpie - May 7, 2020 108 0 Facebook Twitter Google+ Pinterest WhatsApp Moderna Inc said on Thursday it expects mid-stage trials for its COVID-19 vaccine to begin shortly while late-stage trials are expected to begin early summer, sending shares of the drug developer up 12% before the bell.