A vaccine study in the United Kingdom reports that getting a dose of the Pfizer-BioNTech vaccine four weeks after a dose of Oxford-AstraZeneca produced a much stronger immune response than two doses of AstraZeneca.
Even at the best of times, mixed messaging is problematic. But introducing it into an information ecosystem that’s rife with bad-faith actors and conspiracy theorists is a recipe for disaster, writes columnist Max Fawcett.
Canadian provinces suspended use of the Oxford-AstraZeneca COVID-19 vaccine in people under age 55 on Monday, March 29, 2021, acting on an advisory committee's concerns about a possible link between the shot and rare blood clots.
Scientists at the National Advisory Committee on Immunization are reviewing research that suggests people who have been infected with COVID-19 can turbocharge their antibodies with just one dose of a vaccine.