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Source global Wall Street Journal     time 2020-09-06 23:55:40
Typefacelarge in Small

And a more sensitive method of testing that sewage, developed by a team led by Dr. Alex MacKenzie, senior scientist at the CHEO Research Institute, could make the early warning system more effective.

And a more sensitive method of testing that sewage, developed by a team led by Dr. Alex MacKenzie, senior scientist at the CHEO Research Institute, could make the early warning system more effective.

Photo by Julie Oliver /Postmedia


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