Naples, ITALY - Health workers prepare doses of the Pfizer-BioNTech COVID-19 vaccine at a Coronavirus (COVID-19) vaccination center in Naples, Italy. BACKGRID UK 8 JANUARY 2021,Image: 581936196, License: Rights-managed, Restrictions: RIGHTS: WORLDWIDE EXCEPT IN AUSTRALIA, CANADA, ITALY, NEW ZEALAND, UNITED STATES, Model Release: no

6286704 15.07.2020 In this handout photo released by the Russian Defence Ministry, a medic collects blood for antibodies to the coronavirus disease from a participant in a coronavirus vaccine trial during tests at the Burdenko Main Military Clinical Hospital in Moscow, Russia. Editorial use only, no archive, no commercial use. Ministry press service оброны Russian Federation