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Izadi Sh, Holakouie Naieni K, Madjdzadeh S.R, Chinikar S, Rakhshani F, Nadim A et al . The prevalence of Crimean-Congo Hemorrhagic Fever in Sistan and Baluchestan Province, Iran: a serologic study. Payesh 2003; 2 (2) :87-95
URL: http://payeshjournal.ir/article-1-840-en.html

Objective(s): Several cases of Crimean-Congo Hemorrhagic Fever, which is an arboviral disease, have been reported since summer 1999 from different parts of Iran. The main objective of this study was to determine the prevalence of the infection within Zahedan and Zabel, two districts of the Sistan and Baluchestan province in Iran.
Material & Methods: In this seroprevalence study 300 subjects sampled through "probability proportional to size cluster sampling” method from the general population of the Zabol and Zahedan districts. For every subject in the sample a questionnaire was completed and a blood sample was taken. The following variables were measured through questionnaire: age, sex, living environment (rural versus urban),   education,  job,   history  of  tick  bite,  history   of  contact   with  domestic   animals,  history   of slaughtering,  presence  of places  for keeping  livestock at house  and  history  of keeping  of livestock  in house.
Results: All but just 3 of 300 samples were consent for blood sampling and just 7 out of the 297 serum
samples were  found to be ELISA positive. In other words the calculated   seroprevalence was 0.024 (95%CI= 0.003 - 0.044). History of keeping of domestic animals in house seemed to have significant relationship with seropositivity (P = 0.018).