The risk of long COVID was two to three times higher after the initial infection (14.8%) than after first (5.8%) or second (5.3%) reinfections.
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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Amid uncertainty about the meaning of the changes, intensive efforts are underway to gauge how the they might impact tests, treatments, and vaccine efficacy.
The researchers call some types of emotional distress experienced by healthcare workers "moral injury."
"While Europe is again the epicenter of the pandemic, no country or region is out of the woods."
The number of people flying in the US is double what it was for the same time last year.
SARS-CoV-2 antibody concentrations predict COVID-19 vaccine effectiveness, with higher levels correlating with greater protection, according to an ongoing US phase 3 clinical trial yesterday in Science.
COVID-19 deaths in the WHO European region have doubled since late September.
Younger Black women died at a 4.2 times higher rate than White women their age.
Also, company data show the Pfizer vaccine 100% effective against COVID-19 in children ages 12 through 15.
A new nationwide study in France involving people 75 years or older found no increase in acute myocardial infarction, stroke, or pulmonary embolism 14 days following each Pfizer-BioNTech COVID-19 vaccine dose. The data was published as a research letter yesterday in JAMA.
More than 30 states report sustained rises in new cases as Americans prepare to gather for Thanksgiving.
