Commercial Fixed Wing
Dispatch Dispatcher
Workload; Troubleshooting; Time Pressure; Communication Breakdown; Confusion; Distraction; Situational Awareness
ATC Issue All Types; Inflight Event / Encounter Fuel Issue
Flight Crew Diverted
Staffing; Procedure; Human Factors; Airspace Structure; Company Policy; Environment - Non Weather Related
Aircraft X released by previous shift Dispatcher ZZZZ-ZZZ as a re-release flight plan as is normal.  After I took over and flight had been in air for several hours over mid-Ocean; we received a no-notice NOTAM advising that ZZZ Center was going to be closing from XA:30z-XC:00z for COVID cleaning.  Aircraft X planned right through that airspace during that time frame (release prepared well before NOTAM was ever issued or any notice was received). Spoke with both ZZZ Center watch desk who stated that absolutely no traffic would be allowed through; no matter when they departed and if they didn't have enough fuel to go-around; they would have to land.  Attempted multiple different routings around ZZZ [Center] airspace but not enough to circumnavigate.  Consequently; flight had to divert to ZZZ1 for fuel.This was caused by ZZZ Center failing to provide notice of a closure in a timely manner as other centers have done when they have needed to close.  Also at issue is why it requires shutting down the entire facility while someone sprays disinfectant.  Absolutely no reason why Controller stations can't be shut down a few at a time to enable continued; if limited operation rather than a total shutdown.FAA needs to establish contingency plans for each center to remain open for at least a minimal level of service during COVID cleanings.  As an essential safety function; it is unacceptable for them to just decide to go ATC zero when planes are already in the air.
Dispatcher reported late notice for a Center to be closed for COVID cleaning; which resulted in a divert.