Experiments showed that the presence of the virus near nerve cells (neurons) in olfactory tissue brought an inrushing of immune cells, microglia and T cells, that sense and counter infection.
The researchers compared the Omicron variant to the original SARS-CoV-2 virus, as well as the Beta and Delta variants. The Beta and Delta variants have mutations that help them evade class 1 and 2 antibodies, but not class 3 and 4. Omicron, on the other hand, has mutations that affect the binding of