GREY-BRUCE – The province has designated Grey-Bruce a Delta variant hot spot, as cases continue to climb. There were 28 new cases reported as of July 7. Ten other public health units have previously been identified as hot spots: Durham, Halton, Hamilton, Peel, Porcupine, Simcoe-Muskoka, Toronto, Waterloo, Wellington-Dufferin-Guelph and York. First identified as present in…