Scientists have identified a persistent change in a handful of blood proteins in people with long Covid that indicates that an important part of their immune system remains on high alert for months after an acute infection.
The findings, published Thursday in the journal Science, could help explain what causes the persistent fatigue, brain fog and other debilitating symptoms of long Covid, as well as pave the way for diagnostic tests and potentially, a long-awaited treatment, experts say.
The world’s renewable energy grew at its fastest rate in the past 25 years in 2023, the International Energy Agency reported Thursday in its first assessment since nations agreed in December on ambitious new targets to slow dangerous climate change.
By taking biopsies from long COVID patients before and after exercising, scientists in the Netherlands constructed a startling picture of widespread abnormalities in muscle tissue that may explain this severe reaction to physical activity.
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