Unveiling the Immune System Differences in Long Covid Patients

Scientists have discovered clear differences in the blood of people with long Covid, providing evidence that the condition is a biological illness. The findings offer potential for the development of a blood test to diagnose long Covid, which has left millions with ongoing fatigue and other debilitating symptoms. The study revealed irregular activity in immune system cells and significantly lower levels of the hormone cortisol in long Covid patients. Dormant viruses, such as Epstein-Barr, were also found to reactivate in long Covid patients. Further research is needed to understand the role of these signals and how they contribute to the disease.