NOISY-LE-GRAND, France (Reuters) – Wastewater samples from the Paris sewer formula have shown COVID-19 lines since last June, after disappearing when France imposed a blockade, according to the head of the laboratory guilty of the investigation.
Infection rates in France are declining, but officials this week forced the wearing of masks in enclosed public spaces after a series of localized outbreaks. To date, COVID-19 has killed more than 30,000 people in France.
Early studies by scientists in the Netherlands, France, Australia and elsewhere recommend that sampling wastewater for sarS-CoV-2 coronavirus symptoms can help estimate the number of infections in a geographic domain without having to verify the person.
Laurent Moulin, who runs the research laboratory through the water application company Eau de Paris, warned that the findings did not mean a resurgence of the virus in the population, as France eases its blocking restrictions.
But, Moulin said, when used in conjunction with other data, can be a useful early warning sign about the spread of the virus, even before other people feel bad enough to seek medical help.
“We had the closure, which reduced the number of people in poor health, and then, a little later, we saw a relief in the concentration of SARS-CoV-2 in the wastewater,” Moulin said, referring to the virus strain the covid epidemic19. .
“What have we noticed since the end of June? We’ve noticed put negatives (for virus lines) that are positive,” he said.
Infection rates in Paris are in line with the national trend.
Workers at a wastewater treatment plant in Noisy-le-Grand, east of Paris, fill plastic bottles with sewage and put them in a cooler. These are then transported to the lab on the southern outskirts of the city, where researchers in combinations and biological threat mask analyze them.
Wastewater sampling detects the genomes of coronaviruses, fragments of the virus’s genetics that are not infectious and can be emitted by others without symptoms.
Moulin said the evidence he was collecting in the sewer formula would be incorporated into the models used to analyze the progression of the virus.
Researchers in Paris published effects in April that showed how water sampling in the city for a month followed the same curve as the developing and shrinking epidemic.
Reporting through Lucien Libert and Benoit Tessier; Writing through Christian Lowe; Edited through Raissa Kasolowsky
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