Toronto District School Board (TDSB) is reporting that there are now more than 50 schools with one or more staff and/or students who have tested positive for coronavirus.The milestone was reported by the TDSB on Tuesday, the same day the board announced it was enhancing its guidelines requiring masks and face coverings.In an update released on Tuesday, TDSB officials said parents and guardians will now be required to wear masks during pick-ups and drop-offs at schools.