What was found
RECEIVED A CALL FROM AFT GALLEY DURING CLIMB ABOVE FL230 THAT A DIRTY SOCK ODOR WAS PRESENT IN THE REAR GALLEY. 15 MINUTES LATER, LEARNED OF PHYSICAL SYMPTOMS PRESENT OF THE NR 2 AND 3 FLIGHT ATTENDANTS. THROAT IRRITATION AND NAUSEUSNESS . CONFERED WITH MX CONTROL AND DISPATCH AND DIVERTED. AIRCRAFT WAS ON LT & RT PACKS AND NR 1 ENG BLEED AND NR 2 ENG BLEED DURING INITIAL CALL. NR 1 ENG BLEED WAS TURNED OFF OUT OF CONCERN FOR HP VALVE INDICATION AND TO COMPLY WITH THE MEL FOR DECENT; COMPLIED WITH INFO NOTICE 2017-TO15A SECTION B TABLE 1. AIRCRAFT IS OK FOR SERVICE.