Routes of Infection: Exports and HIV Incidence in Sub-Saharan Africa
Free trade has externalities, including some of our most important diseases. (Also invasive species.)
Added to the Criticisms of Neoliberalism, Capitalism, and Free Markets index.
Very simply, trade has always been a substantial route for infection, including the black plague. Such externalities do not mean that trade should be stopped: rather they mean that efficiency should be improved by internalizing those costs of trade. Probably by government regulation, which may be the best of the second best alternatives.