COVID-19 is surging in parts of North America and Europe, and even played a role in ending the presidential campaign of 81-year-old Joe Biden, who was infected for the third time last month.

Nevertheless, on Wednesday the Ontario government shut down its early warning system to detect COVID and other emerging diseases.

Doctors, citizens and researchers are calling the decision to kill the province’s wastewater disease surveillance program both wrong-headed and dangerous. Ending the program will make it harder to track and thwart viral outbreaks, they say, and thereby increase the burden on Ontario’s understaffed hospitals, which experienced more than 1,000 emergency room closures last year.

“Pandemics do not end because science has been muzzled,” Dr. Iris Gorfinkel, a well-known Toronto physician and clinical researcher, told the CBC.

In emails to politicians, more than 5,000 citizens have demanded restoration of the program, with little effect.