COVID vaccinations provide immune response against new SARS-COV-2 strains--study

Prior COVID vaccination produces immune response against new SARS-CoV-2 strains, study finds Neutralizing antibodies tested 90 days after infection were greater in participants who had been vaccinated before their variant infections than in those who had been vaccine-naive. CIDRAP

Receiving a prior COVID-19 vaccine did not prevent the immune system from producing protective responses to either Delta or Omicron virus strains, according to a new study in Nature Immunology. The findings are promising and suggest that, despite a drop in antibodies for mutated parts of the virus, vaccination offers ongoing protection from severe disease. 

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