With increasing time since diagnosis, only the severe infections continued to cause symptoms.
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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"Make no mistake, we have a long way to go. This virus will be with us for a long time," says the WHO director.
Two deaths in early February in Santa Clara County, California, can now be attributed to COVID-19.
Also, 2 studies explore infection dynamics in patients who show no symptoms.
The global total tops 2.5 million cases, including 175,812 deaths.
South Carolina, Tennessee, and Georgia are reopening parts of their economies this week and next—earlier than the White House recommends.
At-risk children may be especially affected by COVID-related school closings and other steps.
"The continuation of this positive trend depends on our actions."
The WHO pushes back on accusations that it didn't warn countries early enough.
A study in healthcare workers underscores the need for careful screening.
New testing studies reveal more about spread in some US communities, and overseas, cases rose steadily in many countries, especially Russia and Japan.
