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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In 1 of the 3 studies, vaccination was 98% protective against ICU stay and life support in teens.
India's cases have spiked 30-fold in a month, fueled by the highly transmissible Omicron variant.
Austrian scientists writing in a letter in the New England Journal of Medicine yesterday demonstrate poor neutralization of the Omicron variant when using serum from vaccinated or recovered COVID-19 patients, potentially signaling a need for variant-specific vaccines.
The steps are part of continued efforts to keep schools open for in-person learning.
Risk factors were older age, chronic conditions, and longer symptoms.
"Almost 50,000 deaths a week is 50,000 deaths too many," says WHO head.
The US COVID-19 vaccination program may have averted 14 million infections, saved more than 240,000 lives, and prevented upwards of 1.1 million hospitalizations in the first half of 2021, according to estimates from a modeling study yesterday in JAMA Network Open.
New data show the Omicron variant spreads more easily by asymptomatic people.
Those who got a third dose had 12.8 cases per 100,000 person-days, vs 116 in the unboosted.
Yesterday the US reported 1.35 million new COVID-19 cases, the most any nation has ever reported in 1 day.