A spike in coronavirus cases among young people in Trafford has prompted urgent action by health bosses.The number of people testing positive for COVID-19 has risen in the borough, with 17-23-year-olds specifically accounting for around half of all new cases.New cases in Trafford rose from 26 in the week ending July 17 to 77 the following week.Of the 77 cases, 39 were people were aged 15-25, up from nine for the same cohort a week earlier.Public Health bosses say they aren't sure what has caused