Why antibodies aren't the only defense against Omicron
Washington (AFP) - In the fight against the coronavirus, one key component of the human immune system has hogged the limelight: antibodies. These Y-shaped proteins have made top news recently because Covid-19 shots don't produce as many of them that work against the heavily mutated Omicron variant compared to past strains -- at least, not without a booster. Trained by both vaccines and infection, antibodies grab on to the spike protein that studs the surface of the coronavirus, stopping it from penetrating cells and sickening the host. But while antibodies are rightly celebrated, they're not ...