COVID-19: 5 blood proteins predict critical illness and death

A study suggests that among people hospitalized for COVID-19, blood levels of five proteins are higher in those who will go on to require critical care. These proteins are associated with a type of immune cell that may promote excessive inflammation and blood clotting in the lungs. Some of the same proteins are at elevated levels in people with obesity. If further studies confirm the findings, the discovery could lead to new tests and treatments for severe COVID-19.