الفهرس 
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Abstract
The results obtained in this study concerning the bacteriological characterization of the examined raw milk samples and hand swabs of contact dairy workers collected from different dairy farm in Qena Government showed that, most of the investigated samples proved their contamination with staphylococci.
The recorded incidence of Staph.aureus isolated out of raw milk samples and human hand swab samples 72.3% (199 out of 275). The incidences of Staph.aureus were 73.2% (182 out of 250) raw milk samples collected form dairy farms and 64% (16 out of 25) of hand swabs obtained from contact dairy workers. It can be considered as an index of very low hygiene level of obtained, manufacturing and distribution of these food materials, it form a health hazards to consumers.
Milk is the main sources of animal protein, however it is considered as a major vehicle of the most reported outbreaks of food-borne poisoning.
Steph. aureus is a good indicator of the degree of contact with human-beings or raw animal products within the food factory.
Based on antibiotic sensitivity test, about 72% Steph. Aureus isolates were found as multidrug resistant.
The isolates were found 100% resistant to Penicillin and Ampicillin, 24 % resistant to Amoxicillin / Clavulinic acid, 62% resistant to Oxacillin, 14% resistant to Erythromycin and 18% resistant to clindamycin.
On the other hand, all the isolates found 100% sensitive to Vancomycin, Gentamycin, Amikacin, Ciprofloxacin, Tetracyclin, Trimethoprim / sulfamethoxazole and Chloramphenicol. 96% sensitive to Amoxicillin.