..
By Maggie Fox, CNN
Updated 1750 GMT (0150 HKT) June 16, 2020
(CNN)Here’s a good reason to put the lid down before you flush: a new computer modeling study shows how a flushing toilet can send a cloud of little particles containing fecal matter into the air — fecal matter that could carry coronavirus.
Doctors have shown that coronavirus can live and replicate in the digestive system, and evidence of the virus has been found in human waste.It’s considered a possible route of transmission.
Now a team at Yangzhou University in China has used computer modeling to show how the water from a flushed toilet could spray up into the air — as high as three feet, they wrote in the journal Physics of Fluids.
“One can foresee that the velocity will be even higher when a toilet is used frequently, such as in the case of a family toilet during a busy time or a public toilet serving a densely populated area,” Ji-Xiang Wang of Yangzhou University, who worked on the study, said in a statement.
..
A new study shows how turbulence from a toilet bowl can create a large plume that is potentially infectious to a bathroom’s next visitor.
By Knvul Sheikh
Published June 16, 2020Updated June 17, 2020
..
..
Excerpts from:
Wastewater testing could also be used as an early-warning sign if the virus returns.
Smriti Mallapaty
More than a dozen research groups worldwide have started analysing wastewater for the new coronavirus as a way to estimate the total number of infections in a community, given that most people will not be tested. The method could also be used to detect the coronavirus if it returns to communities, say scientists. So far, researchers have found traces of the virus in the Netherlands, the United States and Sweden.
Analysing wastewater — used water that goes through the drainage system to a treatment facility — is one way that researchers can track infectious diseases that are excreted in urine or faeces, such as SARS-CoV-2.
One treatment plant can capture wastewater from more than one million people, says Gertjan Medema, a microbiologist at KWR Water Research Institute in Nieuwegein, the Netherlands. Monitoring influent at this scale could provide better estimates for how widespread the coronavirus is than testing, because wastewater surveillance can account for those who have not been tested and have only mild or no symptoms, says Medema, who has detected SARS-CoV-2 genetic material — viral RNA — in several treatment plants in the Netherlands. “Health authorities are only seeing the tip of the iceberg.”
https://www.nature.com/articles/d41586-020-00973-x
..
https://twitter.com/KittySn52889207/status/1239405484831997952?s=19
..
https://twitter.com/KittySn52889207/status/1239405110381268992?s=19
New coronavirus may spread through poop
By Yasemin Saplakoglu – Staff Writer 25 days ago
Wash your hands after using the bathroom.
The new coronavirus SARS-CoV-2, which has now infected nearly 76,000 people, spreads mostly through respiratory droplets and contact with infected patients. But new research suggests that it can also spread through feces.
There are currently more cases of COVID-19 (the disease caused by the virus SARS-CoV-2) than would be expected if the virus were spreading only through respiratory droplets and contact with infected patients, according to a report published Feb. 15 by the Chinese Center for Disease Control and Prevention (China CDC).
Previous tests have found that the coronavirus can be present in feces, but it was unclear if the virus would be viable enough to spread to another person, according to a previous Live Science report. So, a group of researchers analyzed stool samples from patients with COVID-19.
They isolated the coronavirus from one patient who had severe pneumonia and examined the virus under an electron microscope. They found that the coronavirus was viable. “This means that stool samples may contaminate hands, food, water, etc.,” the China CDC wrote in the report. People who use the bathroom and then don’t wash their hands could spread the virus to others, for instance.
“This virus has many routes of transmission, which can partially explain its strong transmission and fast transmission speed,” the China CDC wrote. To avoid feces contamination, the China CDC recommends washing your hands frequently, disinfecting surfaces, maintaining personal hygiene, avoiding the consumption of raw food, boiling water before drinking it and disinfecting hospital environments.
Another study, published Feb. 17 in the journal Emerging Microbes and Infections, found that the virus was present in blood and anal swabs taken from patients infected with SARS-CoV-2.
https://www.livescience.com/coronavirus-covid-19-spread-through-feces.html
..
weehingthong 