That makes the two-dose regimen of Johnson & Johnson's vaccine comparable to a two-dose regimen of Moderna or Pfizer's vaccine.

By: KDKA-TV News Staff

PITTSBURGH (KDKA) — Johnson & Johnson is reporting that a two-dose version of its COVID-19 vaccine provides 94% protection against symptomatic infection.

That makes the two-dose regimen of Johnson & Johnson’s vaccine comparable to a two-dose regimen of Moderna or Pfizer’s vaccine.

The company is now saying that adding a booster dose to a single shot of the vaccine raised immunity even more — and should also protect people strongly against infection.