Killer T cells boost immunity to coronavirus variants: study – Yahoo News Australia

The emergence of coronavirus variants has provoked concern about their impact on the effectiveness of vaccines, and whether people who were previously infected might be more susceptible to reinfection.
But in welcome news, a new study on Tuesday showed that a key player in the immune response, called the “killer T cell,” remained mostly unaffected.
The finding is encouraging because although these white blood cells are not a first line defense against infection, they can help prevent severe disease.
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