Kitchener — Public health units across Southwestern Ontario have either closed or cancelled certain appointments Monday at COVID-19 vaccination clinics due to the heavy snowfall. WATERLOO REGION PUBLIC HEALTH The region said around 300 appointments were cancelled on Monday. WELLINGTON-DUFFERIN-GUELPH PUBLIC HEALTH A spokesperson for WDG Public Health said they cancelled 272 appointments in Orangeville and 63 in Mount Forest. HURON PERTH PUBLIC HEALTH A spokesperson said more than 300 appointments were cancelled. They will be rescheduled for clinics this week.