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PPT : Microbial Pathogens in Raw Milk
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Introduction
* Milk and other dairy products are of superior quality and safety
*Historical perspective
o 1900 -1940s:Tuberculosis,Bang’s disease, Diptheria, Typhoid fever highly prevalent
o 1930s: Pasteurization of milk
o 1940-1960s: Eradication of animal diseases (Brucellosis, Tuberculosis)
o 1970s: Fewhuman cases reported
o 1990s: Few human cases still reported
Improved farm hygiene and milking practices
Improved milk handling and processing technology
Educated consumers and higher consumer awareness on food safety
Newspapers inform public about outbreaks!
Milk makeskids sick ………
Salmonella outbreak traced to DAIRY farm ……..
Milk contains bugs that makes people sick ……….
Scientists say…….. Dairy farming ……
Dairy cows ….. All infected with dangerous bugs
Killer bug on the loose …… dairy cows responsible
Why do milkborne illnesses occur ?
o Faulty pasteurization offluid milk
+ Defective pasteurizer — less likely
o Post-pasteurization contamination of milk and milk products
+ — likely
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Category : Health DrinkSource : foodsafety.psu.edu
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Language : English
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