The heads of several Montreal homeless shelters say they’re facing a crisis, as rising staff absences due to COVID-19 threaten to disrupt services during the coldest part of winter.

There were outbreaks in 27 Montreal homeless shelters between Dec. 26 and Jan. 1, with a total of 110 staff and clients testing positive during that time, according to the local health authority in the city’s south end.

Michel Monette, the general director of CARE Montreal, says the city is “on the brink of a humanitarian crisis.”