The 10 new flu-related deaths in children bring the season's total to 226, the most since 2009-10.
Plaque growth can lead to a higher risk of heart attack, stroke, and other life-threatening cardiovascular events for as long as 1 year.
Post-exertional malaise, or exercise intolerance, was seen in 36% of those with long COVID.
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Data show a 36% to 68% lower risk of a COVID-19 hospital stay with Omicron.
US cases, now nearing 50,000 per day, are rising fastest in the Midwest and Northeast.
A modeling study estimates that COVID-19 vaccination prevented more than 1.5 million infections, 72,000 hospitalizations, and 19,000 deaths in the first 10 months of vaccination in California, according to a study published late last week in JAMA Network Open.
Also, the WHO revised its assessment of remdesivir, recommending it for mild or moderate infections in high-risk groups.
Only heart disease and cancer killed more Americans than COVID-19, and COVID deaths increased by 1% in 2021 over 2020.
"Policy makers should be largely reassured by people's aggregate capacity to cope."
Extending the time between COVID-19 vaccine doses to over 10 weeks was tied to 11 times higher antibody levels.
A third mRNA dose boosts the immune system to better fight Omicron infections, 2 studies find.
Adults hospitalized early in the pandemic with COVID-19 were at more than triple the risk of death than those with influenza, despite the flu patients being older and having more chronic illnesses, according to new data from Spain to be presented at this year's European Congress of Clinical Microbiology & Infectious Diseases (ECCMID), which starts tomorrow.
This school year 35,000 more US kids were not protected against common diseases.
