Sharp rise in COVID-19 cases to come, says four city sewage

Sharp rise in COVID-19 cases to come, four city sewage reports


Concentrations of the virus would be on the rise in the sewers of Montreal, Laval, Gatineau and Quebec, according to data from the National Institute of Public Health of Quebec (INSPQ) from the watch of the COVID- 19 in sewage, released Wednesday. 

In Montreal, a new peak is looming with nearly 13,390 billion virus particles detected. The last peak in the number of particles in the metropolis was reached on June 12 with more than 12,400 billion virus particles. Last week, the INSPQ wanted to be reassuring by explaining that the data varies and that there is “nothing to worry about for the moment”.

“We observe a certain variability in the last few weeks with a rise in May, an upward trend in May which, however, tends to subside,” said Dr Caroline Huot, medical specialist at the Environmental Health Department, at the time. from the INSPQ, interviewed on LCN.

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In Quebec , the scenario is similar. Although the stations have seen a marked drop in the concentration of particles since June 12, the indicators are again on the rise. A total of 2,610 billion particles of the virus are found in the wastewater of the Old Capital, according to the analysis of June 22.

The situation is similar in Gatineau, where the concentration has peaked since May 31, 2022. Ditto in Laval, where the concentration of two of the three stations is on the rise.

​The amount of SARS-CoV-2 (or viral load) in wastewater is obtained by multiplying the concentration, i.e. the number of virus gene copies measured ml of wastewater, by the average daily flow in the wastewater network (m3/day).