What our sewage can (and can't) tell us about the spread of Omicron


Throughout the pandemic, testing for COVID-19 in wastewater has been used to monitor the transmission of the virus. Wastewater testing is a reliable tool that often complements clinical COVID-19 testing and can be used for the early detection of outbreaks and surges. In Ontario, each of the province’s 34 public-health units joined Ontario’s Wastewater Surveillance Initiative, allowing researchers and public-health units to work together on testing water samples.

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