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In some case it can be also relevant to consider for WASH PIN calculation only the people in need of key sectors for a specific emergency (for instance Food Security in case of drought, Health in case of outbreak). In that case, use these key sector's PIN figures as starting point, and identify which of these people are also in need of WASH interventions.
see Expand the 'field examples' folder on top of this page for some examples of PIN calculation at country level
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