en آمار و اپیدمیولوژی معلولیت‌های ناشی از جنگ/حادثه Epidemiology and Statistics of War/Accident Related Injuries پژوهشی اصيل Original Research <span style="font-size:11pt"><span style="line-height:normal"><span style="tab-stops:517.5pt 522.0pt"><span style="font-family:Calibri,sans-serif"><b><span lang="EN-US" style="font-size:12.0pt"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="background-color:#ffffff;">Abstract</span></span></span></span></b><b><span lang="EN-US" style="font-size:12.0pt"><span new="" roman="" style="font-family:" times=""><span style="color:black"></span></span></span></b></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><b><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="background-color:#ffffff;">Aim: </span></span></span></span></span></b><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black"><span style="background-color:#ffffff;">Crimean-Congo Hemorrhagic Fever (CCHF) is a tick-borne viral zoonosis reported in several provinces of Iran. T</span><span style="background:yellow"><span style="background-color:#ffffff;">his study describes the demographic, occupational, exposure-related, clinical, and laboratory characteristics of CCHF cases recorded by the surveillance system in Guilan Province, northern Iran,</span></span><span style="background-color:#ffffff;"> using the One Health approach. </span><b><span style="background-color:#ffffff;">&nbsp;Methods:</span></b><span style="background-color:#ffffff;"> We conducted a </span><span style="background:yellow"><span style="background-color:#ffffff;">retrospective descriptive analysis</span></span><span style="background-color:#ffffff;"> of surveillance records from </span><span style="background:yellow"><span style="background-color:#ffffff;">2003 to 202</span></span><span style="background-color:#ffffff;">3. </span><span style="background:yellow"><span style="background-color:#ffffff;">Data were summarized using descriptive statistics.</span></span><span style="background-color:#ffffff;"> &nbsp;</span><b><span style="background-color:#ffffff;">Results: </span></b><span style="background-color:#ffffff;">There were 153 laboratory- confirmed cases of CCHF recorded. &nbsp;Of these cases, 121 cases (79.1% ) were male and 32(20.9%) were female. Of the diagnosed CCHF patients, approximately 60% were between the ages of 40 and 70 years. Most of the cases were reported in workstations that were situated in rural regions. Agents responsible for CCHF transmission had direct contact with infected wildlife and tick bites. </span><span style="background:yellow"><span style="background-color:#ffffff;">Nine deaths were reported, corresponding to a case-fatality proportion of 5.9%</span></span><span style="background-color:#ffffff;">, demonstrating an increase in the number of cases noted in the last five years of the study. </span><b><span style="background-color:#ffffff;">Conclusion: T</span></b><span style="background-color:#ffffff;">he findings describe reported human cases and may inform priorities for surveillance and prevention. </span><span style="background:yellow"><span style="background-color:#ffffff;">Because animal, tick-vector, and environmental data were not directly measured, the One Health implications should be interpreted as recommendations for integrated surveillance rather than direct evidence of cross-sector transmission</span></span><span style="background-color:#ffffff;"> in endemic areas.</span></span></span></span></span></span></span></span> CCHF,Tick-borne diseases,Surveillance,One health,Iran 1001 1012 http://ijwph.ir/browse.php?a_code=A-10-2423-2&slc_lang=en&sid=1 A. Davoudi Kiakalayeh Yes N. Noori Roodsari dr.noori.roodsari@gmail.com No S. Hassanniya Golsefid saraaahhn@yahoo.com No S. Nazari saharnazaribusiness@gmail.com No