She has many friends who ended up getting Omicron, despite being vaccinated, who had a rough time. “People who’ve had two doses of the vaccine are not getting as sick as people who are unvaccinated,” she said. In particular the T-cells, another aspect of the immune system, seem to be kicking in, even if antibodies have faded. Because of Omicron’s mutations, “it’s almost a different beast,” and this is why people are getting infected with it. Another pre-print study from South African researchers also suggested people are more prone to reinfection with Omicron after past infection with another strain.

Source: thestar January 15, 2022 22:00 UTC