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Marler Blog Providing Commentary on Food Poisoning Outbreaks & Litigation

Secondary cases are a clear public health threat

I just landed from a 10-hour flight from Istanbul to New York and I have a few moments to update my blog.   On the plane I read the interesting CDC study from Scotland on the prevalence of “Secondary Cases” (person-to-person transmission from a primary E. coli O157:H7 infection).  The study found that secondary cases constituted 246/2,026 (12%) of the symptomatic cases (11% of all cases) on average in a given outbreak.

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Over the last two decades, we have seen dozens of confirmed secondary cases and many that were likely.  Here are a few E. coli Outbreaks that included secondary cases:

And, we have not talked about Salmonella cases yet.

  • Bill–
    Didn’t the Town Dairy outbreak in CT, the one that got Kalee, have secondary and possibly tertiary cases? I need to check.