Research

A discovery in the muscles of long COVID patients may explain exercise troubles Long COVID patients can experience severe energy crashes after physical exertion. New research provides clear evidence that there's a biological basis for the symptoms. NPR

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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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The US is starting 2024 in its second-largest COVID surge ever, experts say A COVID wave is hitting the US in 2024, and it could be the the 2nd largest ever. COVID-19 mask mandates are returning. Know the symptoms, and take precautions. Yahoo News

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Care-seeking for heart-related illness fell amid pandemic—with long-term fallout likely Wavebreakmedia / iStock CIDRAP

Rates of long-term major adverse cardiovascular events (CVEs) fell after the COVID-19 pandemic began in early 2020 and remained lower over the next year among commercially insured New England patients seeking care, and the incidence of congestive heart failure (CHF) and angina (chest pain) remained lower than expected.

After winter holidays, respiratory virus activity continues to build across the US | CNN The first look at trends following most of the winter holidays shows that seasonal virus activity remains elevated and continues to rise across the United States, according to data from the US Centers for Disease Control and Prevention. As infections and hospitalizations mount, the CDC continues to emphasize the importance of vaccination — and the value of treatment to avoid severe disease. Deidre McPhillips CNN

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