Dr Benjamin Krishna and the Virology & Immunology team at Cambridge University have identified a protein, elevated in the blood of Long Covid patients, that could act as a potential biomarker for the condition. This week, we spoke to Dr Krishna about their study, published in Science, which sampled the blood of Long Covid patients across several years. They found Interferon Gamma (IFNɣ) at, an average of, six times the normal level. IFNɣ is a key protein in the body’s immune r...