Overall, 57% of participants had evidence on PET/MRI of inflammation affecting the heart or lungs.
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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Teens who slept less than 7 hours per school night were 17% more likely to report difficulty with schoolwork than those who slept 8 to 10 hours.
Scientists who examined the genetic sequences say they bolster evidence of a spillover from a raccoon dog or other mammal sold at the market.
The pregnancy-related death rate shot up faster in 2021 than in 2020, nearly doubling from rates in 2019 and hitting racial minority women hard.
Black, Latino, and Native American children account for 65% of those who have lost a primary caregiver to COVID-19.
Paxlovid's estimated effectiveness in preventing hospitalization or death was 53.6%, rising to 89.6% when it was taken on the day of the COVID-19 test.
The WHO's new variant tracking system better distinguishes Omicron sublineages and outlines when new SARS-CoV-2 changes pose major public health threats.
Fourth-dose vaccine effectiveness among patients aged 65 years or older was 66% at 7 to 59 days and 57% at a median of 88 days.
"Currently available data show that vaccination remains the best defense against severe disease, hospitalization, and death caused by COVID-19 across all age groups."
Negative infant mood and behavior has been associated with behavioral, cognitive, and developmental problems across the lifespan.
Pandemic-related family financial struggles were tied to increases of 205% in perceived stress and 112% in sadness.
