Sumary of J&J Vaccine Less Effective Against Variants: Study A new study says the one-dose Johnson & Johnson vaccine provides less protection against the Delta and Lamba variants than against the original COVID-19 strain.:
- Johnson vaccine provides less protection against the Delta and Lamba variants than against the original COVID-19 strain.
- The study, which was published online Monday at bioRxiv, said the J&J vaccine’s effectiveness in neutralizing those two variants was “significantly decreased” over time.
- ) People vaccinated with the J&J vaccine may need to get a second shot, perhaps with the Moderna or Pfizer-BioNTech vaccines, to achieve good protection against variants, the study said.
- So far, federal health authorities are not recommending booster shots.
- The findings of the new study are somewhat different from a J&J-sponsored study that found the J&J vaccine provides “strong, persistent” protection against the Delta variant.
- ” Studies sponsored by the company indicate that the vaccine “generated strong, persistent activity against the rapidly spreading Delta variant,” she said.