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.
Eleven people, including a former minister, were arrested in Serbia on Friday over a train station disaster in which 16 people died. The concrete canopy of the newly renovated station in the northern city of Novi Sad collapsed on Nov. 1, 2024 in a disaster widely blamed on corruption and poor oversight. It sparked a wave of student-led protests and led to the resignation of then-Serbian prime minister Milos Vucevic and the fall of his government. The public prosecutor’s office in Novi Sad opened an investigation into the accident and deaths. In February, the public prosecutor’s office for organized crime opened another probe into
RISING RACISM: A Japanese group called on China to assure safety in the country, while the Chinese embassy in Tokyo urged action against a ‘surge in xenophobia’ A Japanese woman living in China was attacked and injured by a man in a subway station in Suzhou, China, Japanese media said, hours after two Chinese men were seriously injured in violence in Tokyo. The attacks on Thursday raised concern about xenophobic sentiment in China and Japan that have been blamed for assaults in both countries. It was the third attack involving Japanese living in China since last year. In the two previous cases in China, Chinese authorities have insisted they were isolated incidents. Japanese broadcaster NHK did not identify the woman injured in Suzhou by name, but, citing the Japanese
RESTRUCTURE: Myanmar’s military has ended emergency rule and announced plans for elections in December, but critics said the move aims to entrench junta control Myanmar’s military government announced on Thursday that it was ending the state of emergency declared after it seized power in 2021 and would restructure administrative bodies to prepare for the new election at the end of the year. However, the polls planned for an unspecified date in December face serious obstacles, including a civil war raging over most of the country and pledges by opponents of the military rule to derail the election because they believe it can be neither free nor fair. Under the restructuring, Myanmar’s junta chief Min Aung Hlaing is giving up two posts, but would stay at the
YELLOW SHIRTS: Many protesters were associated with pro-royalist groups that had previously supported the ouster of Paetongtarn’s father, Thaksin, in 2006 Protesters rallied on Saturday in the Thai capital to demand the resignation of court-suspended Thai Prime Minister Paetongtarn Shinawatra and in support of the armed forces following a violent border dispute with Cambodia that killed more than three dozen people and displaced more than 260,000. Gathered at Bangkok’s Victory Monument despite soaring temperatures, many sang patriotic songs and listened to speeches denouncing Paetongtarn and her father, former Thai prime minister Thaksin Shinawatra, and voiced their backing of the country’s army, which has always retained substantial power in the Southeast Asian country. Police said there were about 2,000 protesters by mid-afternoon, although
RSS