Tiwari Tejpratap S P, Golaz Anne, Yu Diana T, Ehresmann Kristen R, Jones Timothy F, Hill Hal E, Cassiday Pamela K, Pawloski Lucia C, Moran John S, Popovic Tanja, Wharton Melinda
Division of Bacterial Diseases, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.
Clin Infect Dis. 2008 Feb 1;46(3):395-401. doi: 10.1086/525262.
We present 2 case reports in the United States and investigations of diphtheria-like illness caused by toxigenic Corynebacterium ulcerans. A fatal case occurred in a 75-year-old male Washington resident who was treated with clindamycin but did not receive equine diphtheria antitoxin. A second, nonfatal case occurred in a 66-year-old female Tennessee resident who received erythromycin and diphtheria antitoxin.
Both case patients and close human and animal contacts were investigated by their respective state health departments.
C. ulcerans isolated from the patient who died was resistant to erythromycin and clindamycin. For both isolates, conventional polymerase chain reaction results were positive for A and B subunits of diphtheria toxin gene tox, and modified Elek tests confirmed toxin production. The source of infection remained undetermined for both cases. Neither patient was up-to-date with diphtheria toxoid vaccination.
These case reports highlight the importance of early treatment with diphtheria antitoxin, the selection of effective antimicrobial agents, and prevention through up-to-date vaccination.
我们报告了美国的2例病例以及由产毒素溃疡棒状杆菌引起的类白喉疾病的调查情况。1例致命病例发生在一名75岁的华盛顿男性居民身上,他接受了克林霉素治疗,但未接受马源性白喉抗毒素治疗。另一例非致命病例发生在一名66岁的田纳西州女性居民身上,她接受了红霉素和白喉抗毒素治疗。
两个病例患者以及密切的人与动物接触者均由各自所在州的卫生部门进行调查。
从死亡患者身上分离出的溃疡棒状杆菌对红霉素和克林霉素耐药。对于这两个分离株,常规聚合酶链反应结果显示白喉毒素基因tox的A和B亚基呈阳性,改良Elek试验证实产毒素。两例病例的感染源均未确定。两名患者均未及时接种白喉类毒素疫苗。
这些病例报告强调了早期使用白喉抗毒素治疗、选择有效的抗菌药物以及通过及时接种疫苗进行预防的重要性。