KNBN NewsCenter1 March 2, 2021 This marks the third vaccine to be distributed nationwide, and it comes with some different characteristics. First, the Johnson and Johnson vaccine requires normal refrigeration, as opposed to deep freezers, like the Pfizer and Moderna vaccines. Second, it only requires one dose instead of two. And third, the technology behind the vaccines is different than the other two, but still is highly effectively in protecting the body from COVID-19. “Now if this person once immunized with the Johnson and Johnson vaccine, if they’re exposed to the virus, the virus can’t get into the cell because it’s blocked by these antibodies,” said Dr. Shankar Kurra, Vice President of Medical Affairs at Monument Health.