Critically ill patients have robust immunity to new coronavirus

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A new study suggests immune responses to coronavirus in severely ill and critically ill patients are as strong or stronger than those of patients with milder illness. This adds to the evidence that the immune system itself is to blame for the most life-threatening form of the infection.Immune cells known as T cells are responsible for recognizing pathogens, killing infected cells, and recruiting other branches of the immune system to combat infections.However, according to the new study, T cell responses to the new coronavirus in critically ill patients appear to be just as robust as those with a less severe form of the illness.The finding reinforces the conclusion that an inadequate immune response to SARS-CoV-2, the coronavirus that causes COVID-19, is not responsible for critical illness and death. Rather, an excessive immune response is to blame.Stay informed with live updates on the current COVID-19 outbreak and visit our coronavirus hub for more advice on prevention and treatment.The team of researchers, led by Marien Hospital Herne and Ruhr-Universität Bochum in Herne, Germany, compared the T cell responses of 28 COVID-19 patients during the acute phase of the infection and after recovery in survivors. Of these infections, 7 …

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