As you read this, or anything similar, remember this:  
The US-FDA and USDA, along with the US-CDC have comprehensive state of the art bio-genetic research technology which can trace the genetic makeup, the actual DNA strain, of a potato, to the field where it was grown. 
If it were a large field, they can even narrow it to the GPS level mapping coordinates within the field itself….. and this can all be accomplished on mobile research platforms.
I gave instruction within a bio-genetic lab (in another venue) 30 years ago where the origin for this process was created.    Their genetic tracing capability is far beyond the human genome project.  This is real science.  Practical, applicable, provable and certain science.
MEXICO –  The Food and Drug Administration says an outbreak of stomach illnesses in  Iowa and Nebraska is linked to salad mix served at local Olive Garden and Red  Lobster restaurants and supplied by a Mexican farm.
The outbreak of cyclospora infections has sickened more than 400 people in 16  states in all. The agency says it is still working to determine whether the  salad mix is the source of illnesses in the other 14 states.

“It is not yet clear whether the cases reported from other states are all  part of the same outbreak,” the agency said in a statement. “The investigation  of increased cases of cyclosporiasis in other states continues.”
Both Olive Garden and Red Lobster are owned by Orlando-based Darden  Restaurants. In a statement, Darden spokesman Mike Bernstein said the FDA’s  announcement is “new information.”
“Nothing we have seen prior to this announcement gave us any reason to be  concerned about the products we’ve received from this supplier,” Bernstein  said.
The FDA said it traced illnesses from the restaurants in Nebraska and Iowa to  Taylor Farms de Mexico, the Mexican branch of Salinas, Calif.-based Taylor  Farms. The company, which provides produce to the food service industry, said  its facility located about 180 miles north of Mexico City in San Miguel de  Allende is the only one of its 12 sites to be connected to the cases.
In an email, the chairman and CEO of Taylor Farms, Bruce Taylor, said the  Mexican plant produced 48 million servings of salads for thousands of  restaurants in the Midwest and eastern U.S. in June, the month the outbreak  started. He said the facility has an extensive water testing program.
“All our tests have been negative and we have no evidence of cyclospora in  our product,” Taylor said. “We are working closely with the FDA to continue this  investigation.”
Taylor said Taylor Farms de Mexico does not supply Olive Garden and Red  Lobster restaurants in Texas, the state with the second most illnesses in the  outbreak. According to CDC, 113 of the illnesses reported so far were in Texas.  Iowa has had 146 illnesses and Nebraska 81.   (read more)
The most dangerous food stuffs, from the perspective of deadly foodborne illness, are: #1) A Potato.  #2) Salad or leaf vegetables   #3) protein based animal products.   Yet, few, if any, consumers cognitively understand that it is never “meat” which should alarm or cause concern, it is always the vegetables.   Specific vegetables – “row crops”.
Did you know that Nabisco Fig Newtons were made in Mexico?    True.  Next trip to the grocery store look at the packaging, look for country of origin.
The products to make the Newtons are not from Mexico, they are from the U.S. mostly.  Nor is the packaging from Mexico, it is from the U.S., but they are all shipped to Mexico, like car parts, for assembly and reshipment back to the U.S.     Ask yourself “why”?