CO33 | DETECTION AND CHARACTERIZATION OF SHIGA TOXIN-PRODUCING ESCHERICHIA COLI SEROGROUP O103 FROM OVINE RAW MILK CHEESES AT DIFFERENT STAGES OF RIPENING: Gianluigi Ferri1, Filiberto Malatesta2, Luca Maria Pennisi1, Chiara Di Vittori1, Alberto Vergara1 | 1Post-Graduate Specialization School in Food Inspection, Dept. Of Veterinary Medicine, University of Teramo, Italy; 2Veterinary Practitioner, Teramo, Italy. Ital J Food Safety 2026, 15 (s1). https://doi.org/10.4081/ijfs.2026.16220.