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Salmonellosis in Norway and the United States

A recent ProMED post suggested that outbreaks of salmonellosis in the Scandinavian countries are less common than in the USA.  Putting aside confounding factors related to differing surveillance systems, case definitions, etc the definition of “common” is problematic.  Thus the following chart generated by Gideon ( demonstrates that disease incidence is in fact much higher in the United States; but, when adjusted for population, Norway has experienced higher salmonellosis rates (per 100,000 population) through much of the past two decades.

Similarly, the highest number of food-related salmonellosis outbreaks reported in Norway in recent years was only eleven (in 2008), vs. 161 outbreaks in the United States (in 2013).  When adjusted for population size, these figures translate into 0.24 outbreaks per 100,000 population in Norway,  vs. only 0.051 per 100,000 in the United States.

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