Dutch scientists have found the coronavirus in a city’s wastewater before COVID-19 cases were reported, demonstrating a novel early warning system for the disease.
SARS-CoV-2 — the virus that causes COVID-19 — is often excreted in an infected person’s stool.
Although it is unlikely that sewage will become an important route of transmission, the pathogen’s increasing circulation in communities would increase the amount of it flowing into sewer systems, Gertjan Medema and colleagues at the KWR Water Research Institute in Nieuwegein said on Monday.
They detected genetic material from the coronavirus at a wastewater treatment plant in Amersfoort on March 5, before any cases had been reported in the city, about 50km southeast of Amsterdam.
The Netherlands confirmed its first COVID-19 case on Feb. 27 and discovered that health workers had fallen ill with the infection in a southern part of the country days later — a sign that it was spreading in the community.
“It is important to collect information about the occurrence and fate of this new virus in sewage to understand if there is no risk to sewage workers, but also to determine if sewage surveillance could be used to monitor the circulation of SARS-CoV-2 in our communities,” Medema, the institute’s principal microbiologist, and coauthors said in a paper released ahead of peer review.
“That could complement current clinical surveillance, which is limited to the COVID-19 patients with the most severe symptoms,” they said.
It is the first report of detection of the coronavirus in sewage, they said.
Wastewater surveillance is a well-established method of detecting poliovirus and antibiotic-resistant bacteria, as well as the use of illicit and prescription medications.
Sewage surveillance could also serve as early warning of the emergence and re-emergence of COVID-19 in cities, the Dutch scientists said.
“The detection of the virus in sewage, even when the COVID-19 prevalence is low, indicates that sewage surveillance could be a sensitive tool to monitor the circulation of the virus in the population,” they said.
JAN. 1 CLAUSE: As military service is voluntary, applications for permission to stay abroad for over three months for men up to age 45 must, in principle, be granted A little-noticed clause in sweeping changes to Germany’s military service policy has triggered an uproar after it emerged that the law requires men aged up to 45 to get permission from the armed forces before any significant stay abroad, even in peacetime. The legislation, which went into effect on Jan. 1 aims to bolster the military and demands all 18-year-old men fill out a questionnaire to gauge their suitability to serve in the armed forces, but stops short of conscription. If the “modernized” model fails to pull in enough recruits, parliament will be compelled to discuss the reintroduction of compulsory service, German
For two decades, researchers observed members of the Ngogo chimpanzee group of Kibale National Park in Uganda spend their days eating fruits and leaves, resting, traveling and grooming in their tropical rainforest abode, but this stable community then fractured and descended into years of deadly violence. The researchers are now describing the first clearly documented example of a group of wild chimpanzees splitting into two separate factions, with one launching a series of coordinated attacks against the other. Adult males and infants were targeted, with 28 deaths. “Biting, pounding the victim with their hands, dragging them, kicking them — mostly adult males,
Filipino farmers like Romeo Wagayan have been left with little choice but to let their vegetables rot in the field rather than sell them at a loss, as rising oil prices linked to the Iran war drive up the cost of harvesting, labor and transport. “There’s nothing we can do,” said Wagayan, a 57-year old vegetable farmer in the northern Philippine province of Benguet. “If we harvest it, our losses only increase because of labor, transportation and packing costs. We don’t earn anything from it. That’s why we decided not to harvest at all,” he said. Soaring costs caused by the Middle East
Hungarian Prime Minister Viktor Orban’s officially declared wealth is fairly modest: some savings and a jointly owned villa in Budapest. However, voters in what Transparency International deems the EU’s most corrupt country believe otherwise — and they might make Orban pay in a general election this Sunday that could spell an end to his 16-year rule. The wealth amassed by Orban’s inner circle is fueling the increasingly palpable frustration of a population grappling with sluggish growth, high inflation and worsening public services. “The government’s communication machine worked well as long as our economic situation remained relatively good,” said Zoltan Ranschburg, a political analyst
RSS