Pfizer and BioNTech to offer COVID vaccine to volunteers who got placebo

Pfizer and BioNTech to offer COVID vaccine to volunteers who got placebo

Source: 
Yahoo/Reuters
snippet: 

Pfizer Inc and its partner BioNTech Se plan to give volunteers who received a placebo in its COVID-19 vaccine trial an option to receive a first dose of the vaccine by March 1, 2021, while staying within the study.