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UK scientists have discovered a key inflammatory protein that rises in the blood of patients with severe Covid-19.
The protein – known as GM-CSF – was found to be nearly 10 times higher in patients who went on to die from the virus.
Scientists say that with further research, the protein could help identify those most at risk and provide clues for better targeted treatments for the disease.
The work appears in Science Immunology.
Researchers analysed blood samples from 470 patients admitted to hospital with Covid-19 in the UK, comparing them with samples from people