Health professionals moving away from 'herd immunity' Some health professionals say they won't use the term 'herd immunity' anymore. They say the goal is to now manage the virus. Author: Brea Love (ABC10) Updated: 5:21 PM PDT May 3, 2021 CALIFORNIA, USA — Herd Immunity has been a familiar term throughout the pandemic. It’s the notion of getting a majority of the population vaccinated and in turn protected a small percentage that is not vaccinated. Health professionals now say they’re moving away from using that term. “We don’t have an absolute blood test that has a cut-off that says, this person is immune and this person isn’t immune. We don’t know what those antibody values mean. Just because we’re measuring the antibody doesn’t mean that person is immune,” UC Davis Health Dr. Dean Blumberg said.