Merck begins enrollment for COVID-19 vaccine preliminary Kumar Jeetendra | September 12, 2020 United States drugmaker Merck & Co Inc has begun recruiting participants into its early-stage COVID-19 vaccine study, according to the government database clinicaltrials.gov. The phase 1/2 trial, which is based in Belgium, intends to recruit 260 healthy participants to check the experimental vaccine V591, which it gained access to as a member of its May …
