"Blood Biomarker Discovery Offers Hope for Long COVID Detection and Treatment"

A study published in Science has identified a potential biomarker in the complement system of blood serum proteins to detect long Covid, shedding light on the disease and highlighting the key role the immune system plays in its development. The dysregulation of the complement system was found in people with long Covid, potentially explaining symptoms such as fatigue, brain fog, and muscle pain. While the research does not resolve all questions surrounding long Covid, it supports evidence that the immune system plays a key role in the disease and suggests the potential for using complement inhibitors as a treatment.