Delta Variants

Infection-enhancing anti-SARS-CoV-2 antibodies recognize both the original Wuhan/D614G strain and Delta variants. A potential risk for mass vaccination?

August, 2021


  • Infection-enhancing antibodies have been detected in symptomatic Covid-19
  • Antibody dependent enhancement (ADE) is a potential concern for vaccines
  • Enhancing antibodies recognize both the Wuhan strain and Delta variants
  • ADE of Delta variants is a potential risk for current vaccines
  • Vaccine formulations lacking ADE epitope are suggested