The COVID-19 wastewater viral signal for Ottawa has increased substantially (+644%) since a low on July 12, 2023. The viral signal is still lower than the extremely high peaks in early January and early April.
Comments closedFor the first time in months, weekly wastewater data released by the B.C. Centre for Disease Control shows increasing concentrations of COVID-19 at most monitored treatment plants around the province.
Comments closedWastewater surveillance became an important tool for detecting COVID-19 outbreaks in communities throughout the pandemic, and it continues to be used in search for coronavirus SARS-CoV-2 as well as other pathogens.
But it’s unclear whether current levels of government funding to monitor wastewater for SARS-CoV-2 will continue beyond next year. Experts are calling on the federal government to create a standardized system for wastewater surveillance to bolster and replace the patchwork being used today.
Comments closedAt the peak of a SARS-CoV-2 Omicron variant wave in Ontario, wastewater sampling conducted before the surge suggested that COVID-19 cases were 19 times higher than reported because of changes in clinical testing.
Since September, the university has been testing wastewater coming from some student residences to get a better sense of the scale of the pandemic on campus and to help administrators adjust measures based on results.
Comments closedA series of crucial setbacks in Covid-19 testing has made it difficult to keep up with the virus’ rapid spread, and has inspired some researchers to look to wastewater to help fill in the gap of measuring how prevalent SARS-CoV-2 is in a given community.
In a paper posted Tuesday to the preprint server medRxiv, researchers collected samples in late March from a wastewater treatment plant serving a large metropolitan area in Massachusetts and found that the amount of SARS-CoV-2 particles in the sewage samples indicated a far higher number of people likely infected with Covid-19 than the reported cases in that area.
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