A toxicology professor at the University of Saskatchewan believes he has found traces of the Omicron BA.2 subvariant, a potentially more-transmissible form of COVID-19, in samples taken in two cities in the province. The Global Institute for Water Security regularly tests wastewater samples in Saskatoon, Prince Albert and North Battleford for evidence of COVID-19 in an attempt to determine whether case numbers are expected to rise or fall. The findings are then handed over to the provincial government and other researchers.