Sewer sampling, the authors say, could be expanded to track other infectious diseases such as H5N1 avian flu or mpox or to detect unexpected pathogens.
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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Washington state today reported 31 new cases and 70 total, including 11 deaths.
Italian doctors warn their peers of a high percentage of ICU patients among cases and urge them to prepare.
The data suggest patients may be spreading the virus before they have symptoms.
Los Angeles County declares a state of emergency after confirming 6 new cases.
Iran calls off Friday prayers in some cities, and Saudi Arabia announces a temporary ban on Umrah pilgrimages.
The proportion of infected children rose from 2% before Jan 24 to 13% from Jan 25 to Feb 5.
Three main hot spots saw no slowdown in cases, and Argentina and Chile became the latest countries in the Americas to report their first cases.
CDC says there are 108 confirmed COVID-19 cases in the United States.
"The epidemics in the Republic of Korea, Italy, Iran, and Japan are our greatest concern."
Washington state now has 18 cases, 10 linked to a nursing home, and 6 deaths.
