Symptoms

As COVID cases rise, rapid tests are taking longer to detect infection As COVID cases rise over the winter, health experts are finding that it’s taking longer for people using rapid tests to get a positive result after symptoms appear. Cameron Lallana NBC Bay Area

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The problem is: people who initially test negative and then don’t test later may be unknowingly spreading the virus.

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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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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.

Why fears over a ‘tripledemic’ are surging Cases of three major respiratory viruses — the flu, COVID-19 and RSV — are surging in the U.S., pushing the country toward a feared “tripledemic” during its first post-pandemic respiratory viral se… colinmeyn The Hill

Cases of three major respiratory viruses — the flu, COVID-19 and RSV — are surging in the U.S., pushing the country toward a feared “tripledemic” during its first post-pandemic respiratory viral season. ...