Tag: Omicron subvariants

Rather than providing protection, an Omicron infection may leave patients more susceptible to future COVID infections, researchers find after studying seniors in care

sarah JonasResearch Results

Researchers at McMaster University have found that rather than conferring immunity against future infections, infection during the first Omicron wave of COVID left the seniors they studied much more vulnerable to reinfection during the second Omicron wave.

Study offers insights into how COVID variants escape immune system ‘killers’

sarah JonasResearch Results

Omicron subvariants of SARS-CoV-2 — the virus behind COVID-19 — have shown an uncanny knack for evading antibodies produced either by vaccines or exposure to earlier versions of the virus, leading to many breakthrough infections. However, in order to sicken people, these viral variants must also avoid “killer” T cells, immune cells that are unleashed when the immune system detects foreign pathogens.