[a field survey carried out on the confirmation of a pertussis case in a village of kirikkale province, turkey].the aim of this study was to evaluate the existence and the rate of pertussis infection in december 2002 among the symptomatic contacts in konurhaciobasi village of kirikkale province (placed in middle anatolia, turkey, with a population of 500 people), where a laboratory-confirmed pertussis case was defined by culture positivity. sixty contacts with cough history of more than two weeks have been interviewed and their nasopharyngeal swabs have been collected together with the serum samples from ...200717682703
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