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Here's How the Three COVID-19 Vaccines Compare

Steve Baragona

   WASHINGTON - With pharmaceutical company AstraZeneca's announcement
   Monday that its vaccine successfully prevented coronavirus infection,
   three candidates appear to be promising vital tools to curtail the
   COVID-19 pandemic.

   Biotech firm Moderna and drug company partners Pfizer
   andBioNTechannounced last week that their vaccines were ready to submit
   to the U.S. Food and Drug Administration (FDA) for emergency use
   authorization.

   They are signs of hope as the global death toll from COVID-19 nears 1.4
   million people, according to Johns Hopkins University.

   However, scientists caution that all they know about these vaccines is
   what the companies have said in press releases.

   Like movie trailers, "They provide some exciting scenes but leave a lot
   unsaid. You have to go see the whole movie," said Vanderbilt University
   infectious diseases professor William Schaffner.

   More data will be available in the coming weeks, when the companies
   take their applications to the FDA. Until then, here is how the
   vaccines compare, based on the limited information presented in company
   press releases.

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