The Wall Street Journal reports the Trump administration is investing $500 million in the universal vaccine project.
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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In a large US study, 35% of ICU patients died within 28 days of hospitalization.
Only Delaware and Maine reported declining cases in the past 2 weeks.
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.
