Study: Pfizer vaccine neutralizes Brazil COVID-19 variant

Details: People who were fully vaccinated were given an engineered version of the virus that had a similar mutation to the Brazilian strain. Researchers found that the neutralization of the strain was "roughly equivalent" to that of the original, less contagious strain of the virus.

• The study also confirmed that the vaccine is effective against the U.K. variant of the virus.
• The New England Journal of Medicine had previously released other studies that found that both the Pfizer and Moderna vaccines were effective against that strain, per the Washington Post.
• Researchers found that neutralization against the South African variant "was robust but lower" when compared to its effectiveness against the original strain.

Worth noting: Pfizer and BioNTech announced in late February that they will begin testing whether a third booster shot could more effectively neutralize the South African virus variant.