coronavirus cases in a day since April, the latest figures show. Bolton, Oldham, Salford, Tameside and Manchester are now all on the highest level of alert - imposed by the government when the infection rate goes above 50.Rochdale is also teetering on the brink of becoming 'red' with an infection rate of 49.5 in the week ending September 3.The infection rate has risen in every borough apart from Rochdale and Trafford since the previous seven day period.The latest data also shows that 283 positive Covid-19 cases were recorded in Greater Manchester on September 2.Get the latest updates from across Greater Manchester direct to your inbox with the free MEN newsletterYou can sign up very simply by following the instructions hereThis is the.