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One new WPV1 case was reported in the past week from the previously uninfected Kano state, with onset of paralysis on 17 May. The total number of WPV1 cases for 2014 is four.
(Via Global Polio Eradication - accessed 27/06/14)
It is recommended that travellers have a poliomyelitis booster (or course) if not already protected and take precautions with food, water and personal hygiene.