Coronavirus cases across Greater Manchester have fallen by almost a fifth, the latest figures show.In the seven days to November 13 the region-wide infection rate was 427.6 cases per 100,000 people.That's down by 19% on the previous week.Over the same period the infection rate across England rose by 10%.But while numbers are falling, the rates in all 10 boroughs remain higher than the nationwide average of 273.8.Wigan saw the biggest fall in Greater Manchester, with its infection rate dropping 37% to 441.5.Oldham remains the worst affected borough in the region, but its infection rate fell by a just over a quarter to 568.5.It had been as high as 781.2 on November 2, when the borough was the worst-affected area in the country.Rochdale is the.