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Study finds similar brain effects after severe COVID, other critical illnesses Pornchai Soda / iStock CIDRAP

A study involving hospitalized adults today in JAMA Network Open finds that severe COVID-19 negatively affects brain health, but no more so than pneumonia, heart attack, or other critical illnesses.

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Respiratory virus levels climb as JN.1 dominates COVID detections PeopleImages/iStock CIDRAP

... In its tracking of three main viruses that drive visits to health providers for symptoms such as fever and sore throat, the CDC said respiratory syncytial virus (RSV) activity remains elevated, especially for young children. Meanwhile, COVID-19 activity is increasing in many parts of the country, as is seasonal flu, though hospital bed occupancy and intensive care unit (ICU) capacity for all patients remains stable.

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CDC director says U.S. isn't yet near peak Covid or flu levels for the season This winter's pattern is different from that of last year, when Covid, flu and RSV all peaked around the same time, Dr. Mandy Cohen told NBC News. NBC News

The U.S. is seeing a "sharp increase" in flu levels right now, particularly in the south, Cohen said Wednesday in an interview. Covid cases also appear to be climbing nationally, she said, while cases of respiratory syncytial virus, or RSV, seem to have reached their highest point this season.

Dengue cases break records in Americas amid warmer temperatures A record more than 4 million cases have been reported throughout the Americas and Caribbean so far this year. NBC News

SAN JUAN, Puerto Rico — Dengue is sweeping across the Western Hemisphere in numbers not seen since record-keeping began more than four decades ago, with experts warning that rising temperatures and rapid urbanization are accelerating the pace of infections.