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. 2016 May 27;13(6):527. doi: 10.3390/ijerph13060527

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© 2016 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Pathogen type outbreak frequency for all recorded decades (a) and log₁₀ decadal case count for 1970s–2000+; (b) by source type (SW is surface water, GW is groundwater).

Pathogen type outbreak frequency for all recorded decades (a) and log₁₀ decadal case count for 1970s–2000+; (b) by source type (SW is surface water, GW is groundwater).