As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ALL FLIGHT ATTENDANTS FROM BUS CLASS AFT REPORT STALE STUFFY AIR QUALITY. FLT CREW REPORTED MORE THAN 10 F/A'S FELL ILL WITH EFFECTS OF DIZZINESS AND LIGHTHEADED. ONE FLT CREW FELT SAME EFFECTS WHEN TRAVELING TO BACK OF CABIN. F/A'S FROM MID CABIN FELT ILL FIRST AND THEN AFT CABIN F/A'S. THEY ALL FELT BETTER AFTER USING PORTABLE O2. REPLACED 4 EA RECIRC FAN FILTERS IN FWD PIT.