Posts Tagged ‘foodbourne illness’

Arizona’s Food Safety Network

October 11th, 2011

The Listeria monocytogenes outbreak has captured the public’s attention these days- so I thought I’d do a piece on Arizona’s food safety network. Let’s start at the farm & ranch.  The Arizona Department of Agriculture is responsible for ensuring that the base of the food safety pyramid is solid in Arizona.  They have several divisions that are responsible for everything from Arizona farm-grown fruits and vegetables to livestock and poultry.  They also work with the USDA & the FDA to ensure that imported foods are safe and from an approved source.  So, basically, the AZ Dept. of Agriculture is responsible for food safety from the farm or ranch until the food hits the wholesaler or “jobber’s” warehouse. 

Once foods hit the middleman- it’s our job to ensure that food is safely handled until it makes it to your plate at a restaurant or leaves the grocery store in your cart. While our environmental health shop has the overall responsibility for ensuring that your food is safe from the warehouse to you- it’s our partnerships with the local health departments and departments of environmental services that make the system work.  We use the framework outlined in state law and our food safety rules to help guide the counties to make effective decisions in the field.  You can see a more detailed summary of the statewide activities in our latest annual food safety report (the new report is due out in a month or so). 

We delegate our food safety authority to the local health departments who use our authority do the actual inspections for restaurants and food retailers.  But, some of the counties actually act on their own- using authority granted from their board of supervisors.  For example, Maricopa County Environmental Services acts under their county authority rather than using our statewide authority.  All the inspections are done by people called Registered Sanitarians, who are required to have at least 30 hours of college credits in the natural sciences and pass a registration test

Of course, no food safety network would be complete without a robust foodborne illness surveillance system including the laboratory capacity to identify and track foodborne illnesses.  This part of the network also includes collaboration with the local health departments.  Physicians and private labs that identify or diagnose foodborne illness infections report that info to their local health department.  By pulling together the statewide data- we’re able to identify trends and sources- and along with the CDC’s resources, the public health system provides the feedback loop to the food safety network- allowing the system to track down and stop sources.

Who is Louis Pasteur?

September 8th, 2011

In 1862, a French chemist named Louis Pasteur discovered that heat kills germs in liquids, preventing bacterial growth, food spoilage and foodborne illnesses. He used his discovery to invent methods that have been used for the last 150 years as a sanitary treatment for milk – which at the time was a prime source of TB. 

His experiment?  He exposed boiled broths to air in vessels that contained a filter to prevent particles from passing through to the growth medium via a long tube that didn’t allow dust particles to pass. Nothing grew in the broths unless the flasks were broken open- allowing him to conclude that the living organisms that grew in the broths came from outside rather than “spontaneously generated” within the broth (as was the conventional wisdom). This was one of the last and most important experiments disproving the theory of spontaneous generation. The experiment also supported germ theory.

Pasteur’s research also showed that the growth of micro-organisms was responsible for spoiling beverages, such as beer, wine and milk. With this established, he invented a process in which liquids such as milk were heated to kill most bacteria and molds already present within them. He and Claude Bernard completed the first test on April 20, 1862. This process was soon afterwards known as pasteurization.  Because of his study in germs, Pasteur encouraged doctors to sanitize their hands and equipment before surgery. Prior to this, few doctors or their assistants practiced the procedure of washing their hands and equipment.