COVID-19 Shots With Regular Refrigeration Requirements Approved For Human Trials January 13, 2021 0 572 Share on Facebook Tweet on Twitter A potential coronavirus vaccine has been greenlighted for clinical trials. The candidate aims to deliver the same efficacy as Pfizer’s shots, but without the subzero cold storage requirement. Learn more at https://www.deccanherald.com/national/covid-19-indias-mrna-vaccine-receives-approval-for-human-trial-925865.html. Your browser does not support the audio element.