| the seroprevalence of diphtheria among adults in izmir-turkey. | a serological survey to determine the immunity to diphtheria in the adult population in izmir-turkey was conducted according to the recommendations of the world health organization. a total of 339 blood samples were collected from subjects aged between 20 and 81, and diphtheria antitoxin levels were measured by the enzyme linked immunosorbent assay method. titers below 0.1 iu/ml were considered to show insufficient immunity. of the studied population, 56.3% had showed insufficient immunity again ... | 2007 | 17395342 |