The 10 new flu-related deaths in children bring the season's total to 226, the most since 2009-10.
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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Twelve African nations battle surges, and Brazil records a daily high in COVID-19 cases.
According to CDC data, 65.6% of US adults have received at least 1 vaccine dose.
COVID-19 transmission among household members may be reduced 40% to 50% when a person has been vaccinated 21 days or more, according to a New England Journal of Medicine letter to the editor yesterday.
HHS: The risk of myocarditis and pericarditis are much higher from contracting COVID-19 than from vaccines.
Higher death and critical care rates are likely to strain hospitals, researchers say.
All told, 85 countries have reported the Delta variant, and a number of nations are battling rises in COVID-19 cases.
During the first US wave of the COVID-19 pandemic, there may have been almost 17 million undiagnosed COVID-19 infections in addition to the known 3 million cases, or about five times more than officially reported, according to a study in Science Translational Medicine yesterday.
Family members report problems with bonding with the ICU team, understanding their loved ones' condition, and managing their feelings in isolation.
WHO officials warn that a steady global decline is slowing, with surges in all global regions.
"The Delta variant is the biggest threat in the United States to eliminating COVID-19," advisor Anthony Fauci warns.
