[theold]

Maybe he is still talking about the old variants.

“The good news is that we are very, very confident that a third dose, a booster, will take up the immune response to levels that will be enough to protect against the delta variant,” the executive added, referring to the highly contagious virus strain that’s dominant in the U.S. and other countries around the globe. It’s not uncommon for vaccines to decline in effectiveness over time, Bourla stressed, adding there’s precedent for three-dose vaccines for other diseases.