An outbreak of XXXX of unknown origin in Tehran, July 2003.

@entity1 @entity10583 @entity344 @entity1902
Aim of this study was to determine the causative agent and source of a large @entity1902 outbreak occurred in a national financial center (CBIRI) in July 2003. A @entity1 definition was defined staff were interviewed in the clinic of the Bank and their information were collected by means of a standardized questionnaire. A total of 110 fecal specimens were collected within 48 h of symptom onset from 100 @entity1 with symptoms of @entity1902 and 10 restaurant staff. The specimens were processed within 12 h to detect ova and parasites by direct microscopy and common bacteria by standard methods. The outbreak started on 22 July 2003 lasted 4 days. From a total of 1300 staff. 535 @entity1 experienced a severe @entity344 . None but one of tested fecal samples were positive for bacterial enteric pathogens. @entity10583 B was isolated from the positive case. Definitive association between illness and isolated @entity10583 B remained to be determined since it was isolated only from one case. There is a need, however, for increased awareness among both professionals and the public to implement appropriate prevention measures and monitoring of food and water.
