CDC Guidance on Reopening Buildings After Prolonged Shutdown

What steps should a district take to reopen buildings after a prolonged shutdown or reduced operation? The CDC has recommendations to ensure the safety of occupants and the operation of building systems (HVAC and water), online at

Is a deep cleaning required upon reopening a school? According to the CDC website (, if your workplace, school, or business has been unoccupied for 7 days or more, it will only need your normal routine cleaning to reopen the area. This is because the virus that causes COVID-19 has not been shown to survive on surfaces longer than this time.