No positives in staff, teacher virus testing BAR HARBOR — Of the 352 teachers and other staff members in the Mount Desert Island Regional School System who volunteered to be tested for the coronavirus Dec. 8 and 9, none tested positive; four of the test results were inconclusive. The testing last week was the first round in the school system’s program of testing school personnel who have no symptoms of COVID-19, the disease that is caused by the virus. Superintendent Marc Gousse said the initial tests were conducted to establish a baseline. “From there, we will do weekly sentinel testing with a group of about 100 individuals, which will allow us to see if there is any evidence of community spread [of the coronavirus] in our schools,” he said.