At approximately 9:55 a.m. there was a mechanical failure with an Air Handler Unit which serves the 4th floor. At this time no work should take place within any of the 4th floor A/BSL3 rooms. At this time Facilities Engineering is in the process of recovering the Air Handler Unit. A follow-up message will be delivered once all mechanical systems and room pressures are working in a normal manner.

As of 10:30 all HVAC systems have returned to normal operation and all A/BSL3 or BSL3 alarms have returned to normal.  All activities may resume in the affected areas.

We thank you for your patience and understanding at this time.