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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Hong Kong and Japan, which had contained the virus, are experiencing flare-ups and recorded record cases.
Officials have confirmed 4 more Ebola cases in the Democratic Republic of the Congo (DRC) Equateur province Ebola outbreak, raising the number to 56 and passing the total of an outbreak that occurred in the same province in 2018.
"Vaccines can be delivered safely even during the pandemic."
Total US cases now number almost 3.5 million, including 136,940 deaths.
Data released today from a randomized controlled trial evaluating the use of hydroxychloroquine in hospitalized COVID-19 patients show that the antimalaria drug was not associated with reductions in 28-day mortality but was linked with increased time in the hospital and an increased risk of progressing to mechanical ventilation or death.
The vaccine generated an immune response and was generally well tolerated.
"The time to ensure that health and essential workers are adequately protected is now," the authors say.
Efforts are under way to use PAHO funds to help nations buy vaccine, and the group is advising them on trial participation.
The only reason to change guidelines is new data and new science, not politics, they say.
Some low- and middle-income countries could see deaths due to HIV, tuberculosis, and malaria spike by as much as 10%, 20%, and 36%, respectively, over the next 5 years because of health service disruptions amid the COVID-19 pandemic and response, according to a modeling study published yesterday in The Lancet Global Health.