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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Transmission appears to be low, but health officials are monitoring the variant because of potential immune escape.
The unvaccinated were 11 to 17 times more likely to die than those who completed a primary COVID-19 vaccine series.
The mechanisms for the menstrual changes, which the authors say are usually not clinically significant, may have to do with the immune response to vaccines.
The observed median time to first recovery was 14 days in the ivermectin group and 15 in the usual-care group.
Flu is rising in central states, and COVID levels are highest but on the decline in southern states.
The results highlight the importance of addressing the broader impacts of the pandemic on health beyond those directly associated with documented infection, the authors say.
Among adults 65 years and older, vaccine effectiveness was 54% in the first 7 to 59 days.
COVID-19 survivors whose symptoms had resolved in less than 4 weeks or at least 12 weeks had comparable small deficits in cognitive function.
The group settled on stronger wording to clarify advice for patients and simplify decisions for clinicians.
There was also a lower 3-month mortality (31% vs 39%) for the antiplatelet-therapy group.
