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ID#:8532
Description:This historic 1922 photograph showed laboratory Petri dishes that contained the results of milk sedimentation tests. The results revealed that “dirty” milk had been adulterated at some point during its production process.
This was one of a series of instructional images used by the Minnesota Board of Health in order to train public health workers. The purpose of these images and the training was focused on protecting food supplies from bacterial contamination.

Many people do not think about food safety until a food-related illness affects them or a family member. While the food supply in the United States in 2005 was deemed to be one of the safest in the world, CDC estimates that 76 million people get sick, more than 300,000 are hospitalized, and 5,000 Americans die each year from food-borne illness. Preventing food-borne illness and death remains a major public health challenge. The description also stated that the image was labeled as File plate no. 120.

High Resolution: Click here for hi-resolution image (6.74 MB)
Content Providers(s):CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date:1922
Photo Credit:
Links:Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
CDC – Nat. Center for Infectious Diseases; Water-Related Diseases
Categories:
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.

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