Scientists at Fred Hutchinson Cancer Research Center have found laboratory evidence that patients who have been infected with the COVID-19 virus and are subsequently vaccinated against it mount a stronger immune defense than those who were vaccinated but never infected with the virus.
In a paper posted online on March 25 by the journal Science, a Fred Hutch team led by Drs. Leo Stamatatos, Julie McElrath and Andrew McGuire report that a single shot of either the Moderna or Pfizer-BioNtech vaccines boosted participant immune responses against SARS-CoV-2 by as much as 1,000-fold.
