FILE - In this Wednesday, Aug. 5, 2020 file photo, senior Clinical Research Nurse Ajithkumar Sukumaran prepares the COVID 19 vaccine to administer to a volunteer, at a clinic in London. British scientists are beginning a small study comparing how two experimental coronavirus vaccines might work when they are inhaled by people instead of being injected. In a statement on Monday, Sept. 14, 2020, researchers at Imperial College London and Oxford University said a trial involving 30 people would test vaccines developed by both institutions when participants inhale the droplets in their mouths, which would directly target their respiratory systems. (AP Photo/Kirsty Wigglesworth, File)
