cubes, dice or blocks with syringe metaphor for vaccination start against covid-19 corona virus on wooden background

background biohazard blocks care center centre clinic contamination corona coronavirus cov covid covid19 cubes dice disease epidemic fever flu german global health illness impfstart impfzentrum incubation infect infection infectious investigation medical medicine mers metaphor outbreak pandemic pneumonia prevention protection quarantine risk sars science sickness start syringe treatment vaccinate vaccination vaccine virology virus wooden words