This study aimed to investigate the clinical and epidemiologic features of Crimean-Congo hemorrhagic fever among 34 children and adolescents (mean age, 13.3 +/- 4.6 years) from a highly endemic region. Clinical manifestations were similar to those in adults. The case-fatality ratio was 26.5% (9 of 34). Compared with adult patients, children and adolescents may be more vulnerable to severe and fatal Crimean-Congo hemorrhagic fever.