Some coronavirus mutations may help it evade immune system's T-killer cells: study

Some mutations in the novel coronavirus may not only enable it to evade antibodies, but also make the virus unrecognisable to the immune system's T-killer cells, says a new study which could aid in the further development of vaccines. While antibodies dock directly onto viruses to neutralise them, the scientists, including those from the Medical University of Vienna in Austria, said the T-killer cells recognise viral protein fragments on infected cells and subsequently kill them to stop virus production.