The United States has been in a "protracted health crisis" for decades, the researchers say.
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 Shanghai, officials maintain no one has died from Omicron—an assertion being challenged.
Compared with a third dose, fourth-dose protection was 64% against severe disease and 76% against death.
In its first evaluation of COVID-19 exposures among US healthcare professionals (HCPs) over the first year of the pandemic, the Centers for Disease Control and Prevention (CDC) reports that most HCPs were likely infected at work rather than in the community.
The CDC extends the mask order for public transit by 2 weeks and revamps international travel alerts.
COVID-19 exposed existing US public health weaknesses, especially along racial lines.
Two new studies describe benefits of the monoclonal antibody (mAb) treatment casirivimab-imdevimab in adult COVID-19 outpatients, both suggesting lower rates of hospitalization, intensive care unit (ICU) admission, and death in an era dominated by the Delta variant.
Researchers say 44% of the population was infected by November 2021, with wide regional variations.
Cases are rising in eastern states where BA.2 subvariant proportions are very high. Globally, COVID cases passed the 500 million mark today.
Approximately 2.4 out of every 1,000 patients hospitalized with COVID-19 developed myocarditis, an inflammation of the heart muscle that typically follows viral infections, according to an international study published yesterday in the American Heart Association (AHA) journal Circulation.
When including possible myocarditis cases, the rate increases to 4.1 per 1,000 hospitalized patients.
Also, Philadelphia reinstates a mask mandate, the first major US city to do so.