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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For the first time since February, the US topped 900,000 cases in a week, and more kids are hospitalized than ever before.
Vaccination is key to protect adult household members, an editorial on the study notes.
US wildfires were associated with excess COVID-19 cases and deaths from mid-August to mid-October 2020, according to a study published late last week in Science Advances.
Also, two states with relatively high vaccination rates are seeing COVID-19 surges.
The authors say factors could include high patient numbers and underestimating airborne transmission.
Japan and Thailand report record daily cases, and South Korea says its fourth surge hasn't peaked yet.
COVID-19 transmission among households was three times more likely if the household had a high living density, according to a study yesterday in Clinical Infectious Diseases. Higher living density is defined as having more than three household members but fewer than six rooms.
Data indicated a third dose was safe and had efficacy in the immunosuppressed.
Also, two states make up 30% of COVID hospitalizations, and third doses for immunocompromised people are likely.
