Sanitation and health externalities: resolving the Muslim mortality paradox

Sanitation and health externalities: resolving the Muslim mortality paradox, 2014.

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Michael Geruso and Dean Spears

It is the open defecation of one’s neighbors, rather than the household’s own practice, that matters most for child survival. The gradient and mechanism we uncover have important implications for child health and mortality worldwide, since 15% of the world’s population defecates in the open. To put the results in context, we find that moving from a locality where everybody defecates in the open to a locality where nobody defecates in the open is associated with a larger difference in child mortality than moving from the bottom quintile of asset wealth to the top quintile of asset wealth.