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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One involves a symptomatic passenger who likely infected at least 12 others.
India, with 5.5 million cases, is closing in on the US, which has 6.8 million.
Acute stress and depression rates rose in US adults as COVID-19 cases and deaths accumulated from mid-March to mid-April, largely related to preexisting mental and physical conditions and stressors such as job and wage loss, according to a study of 6,514 people from three large, nationally representative cohorts.
Also, the CDC reverses itself on controversial testing guidance.
The global total tops 30 million cases only 4 days after surpassing 29 million.
Increased age, male sex, non-Hispanic black ethnicity, and certain underlying health conditions are associated with a greater risk of hospitalization from COVID-19, according to an analysis of data from more than 5,000 hospitalized adults. A group based at the Centers for Disease Control and Prevention (CDC) reported its findings today in Clinical Infectious Diseases.
The authors of one study say those with COVID should isolate from people and animals.
Those receiving the antibiotic as well as drugs that prolong the QT interval had more cardiac events.
A higher quality rating was tied to fewer outbreaks.
CDC director says a vaccine likely won't be widely available till next spring or summer.