Residents of the UK are all set to receive the first shot of the COVID-19 vaccine as early as this week. The UK is the first Western country to have issued approval of the emergency use of the vaccine developed by Pfizer and BioNTech. The country has ordered 40M doses. As each person requires 2 doses, enough to vaccinate 20M. About 800,000 doses are expected to be available within the first week.