Brain scans suggest long COVID’s biggest clues may lie in the brain’s emotion centers, not widespread inflammation.

Add Yahoo as a preferred source to see more of our stories on Google. Many respiratory viral infections can cause long-term symptoms. sbk_20d pictures/Moment via Getty Images The long-term effects of ...

New research shows that after the body's defenses kill the virus behind COVID-19, leftover digested chunks of SARS-CoV-2 spike protein can target specific immune cells based on their shape. The ...

A team led by the University of Sydney has identified red blood cell rupture at dying endothelial sites as a primary driver of microvascular obstruction in COVID-19, bypassing the expected role of ...

Researchers found flu and COVID infections can awaken dormant cancer cells in mice and humans. Inflammation, IL-6 signaling, and immune cell dynamics were central to the reactivation process. Human ...

Doctors in India are struggling to diagnose and treat long Covid patients due to limited guidelines and scarce research on the condition. Despite the World Health Organization declaring an end to ...

It’s ah-choo much for the body to handle. Viral infections like the flu and COVID-19 can “awaken” dormant breast cancer cells hiding in the lungs, paving the way for deadly metastatic disease, a new ...

Researchers discover that COVID-19 mRNA vaccines do not generate long-lasting plasma cells in the bone marrow, shedding light on why antibody immunity wanes quickly, and highlighting the urgent need ...

COVID-19 was never just a hit-and-run infection, and the latest science shows why. Even after the active virus is gone, fragments of its genetic material and spike proteins can linger, assemble into ...