💉NEW: #Pfizer vaccine elicits weaker antibody response against Delta variant first found in India, acc to new study. Neutralising antibodies 5x lower vs original strain.
— Julianna Tatelbaum (@CNBCJulianna) June 4, 2021
Still unclear if protection against severe disease is impacted tho which is the key.https://t.co/1jnBFG2E2u