Why is Food Poisoning a Winter Phenomenon?

by Ryan Wanger on February 4, 2009 · 2 comments

I spent some time playing around on google trends recently, and in addition to the disturbing upward trend of people googling the term diahhrea (it has doubled since Google started keeping track - doesn’t that say something about our eating habits?), I discovered that the graph for “food poisoning” is actually quite interesting:

Notice that every year, the number of people searching for “food poisoning” in the United States is low in the summer and early fall, and consistently peaks from December through March. What is going on? I have two theories:

  1. There are more issues with food poisoning during the school year - hundreds and thousands of children are all eating food from the same source
  2. Our food comes from further away (and often abroad) in the winter - where its safety may be less scrutinized and there is a greater chance of spoilage during transport

What do you guys think? Have any suggestions for how I can test out these theories? Are there other possible explanations I’m missing? Leave your own thoughts in the comments of this post.

{ 2 comments… read them below or add one }

Vendor Hippo 02.05.09 at 12:41 pm

Ryan, this is a great article. Very interesting.

I think you hit a couple of the reasons right on the head (I would guess anyway). Especially about the schools. My only input would be that perhaps people, as a whole, eat more during the winter months. It could also be the fact that many have to eat their mother-in-laws food during the holidays. :)

The Hippo

Beckie 02.06.09 at 1:15 pm

haha! mother- in - law cooking- I would have to agree with Dan! I also think that folks generally get sicker in the colder months for unexplained reasons and may blame a common sickness/flu on food poisoning.

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