Categories Articles 17 air traffic control centers have been temporarily closed after workers tested positive for coronavirus, highlighting a vulnerability in air travel Post author By crystalg Post date March 30, 2020 Business Insider Feedburner Tags After, Been, Centers, closed, Control, coronavirus, Highlighting, Positive’, temporarily, Tested, traffic, Travel, Vulnerability, Workers ← Free Webinar | April 1: Working and Leading From Home → Coronavirus Persists In Many Patients Even After Symptoms Disappear, Study Finds