Experts are puzzled over oddball COVID-19 gene sequences found in wastewater — but not in patients.
A mysterious lineage of the COVID-19 virus – containing a large and startling collection of mutations — has appeared in California’s wastewater system, proof that the fast-moving pathogen is continuing to test new survival strategies.
So far, the California lineage has only appeared sporadically. And it’s been found in just one of the nine different city and county wastewater sites screened by UCB scientists, who would not disclose the specific locations. Another theory is that it comes from virus-infected animals, such as rats, cats and dogs. Animal poop seeps into our urban sewer systems. Like us, they get COVID-19; their immune systems also force the virus to adapt. There’s concern that a mutated animal virus could jump back into people.
UC Berkeley’s wastewater screening project is a leader in the nation’s search for the COVID-19 virus in our poop. Nationwide, an estimated 400 communities test the contents in sewage pipes and wastewater treatment plants. An additional 250 sites are expected to join in the next several weeks, according to Amy Kirby of the Centers for Disease Control and Prevention’s National Wastewater Surveillance System.
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Poop sleuths discover mysterious coronavirus in California’s sewageHere’s what else is weird: Very similar “cryptic lineages” — viral fragments with novel patterns of mutations — have been found in the sewage of other cities, such as New York City and St. Louis, Missouri.
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