Omicron cannot escape T cells; boosters protect households from Omicron
Omicron's mutations help it escape from antibodies, the body's first line of defense against infection
The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review.
Omicron cannot escape body's second-line defense
A key part of the immune system's second-line defense - its T cells - are highly effective at recognizing and attacking the Omicron variant, thereby preventing most infections from progressing to critical illness, a new study shows.
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Omicron's mutations help it escape from antibodies, the body's first line of defense against infection. Researchers have speculated that other components of the immune response would still target Omicron, but there has been no proof until now.
In test tube experiments, researchers in South Africa exposed copies of the virus to T cells from volunteers who had received vaccines from Johnson & Johnson or Pfizer/BioNTech or who had not been vaccinated but had developed their own T cells after infection with an earlier version of the coronavirus.
