MOSCOW : A Russian state virology institute has started human trials of the country's second potential COVID-19 vaccine, injecting the first of five volunteers with a dose on July 27, the RIA news agency reported on Tuesday.The individual was feeling fine, the agency reported.The next volunteer in the trial by the Vector virology institute in Siberia would receive an injection on July 30, RIA cited consumer safety watchdog Rospotrebnadzor as saying.A government register of all clinical trials shows that the institute, which is overseen by Rospotrebnadzor, is testing a peptide vaccine using a platform first developed for Ebola.The trial is then expected to scale up to 100 volunteers between the ages of 18 and 60, the clinical trials register.