背景:白喉是一种由白喉革兰氏阳性杆菌引起的感染性疾病。咽部,扁桃体,或者喉粘膜.死亡率高达20%,印度占世界发病率的近78%。
目的:我们报告一例密切接触者的鼻咽白喉致死病例。
方法:7岁儿童出现发烧,喉咙疼痛,和耳痛3天,然后颈部肿胀和嘈杂的呼吸。在检查中,膜存在于喉咙中,接受阿尔伯特和革兰氏染色,并报告为白喉梭菌样生物阳性,然后进行培养。患者接受了ADS和抗生素治疗,密集管理,但还是死了.对兄弟姐妹和密切接触者的喉咙和鼻咽拭子上的白喉梭菌进行了随访。它被隔离在其中三个。样品被处理为革兰氏,艾伯特染色,和文化。Identification,抗生素敏感性,和产毒都完成了。
结论:四个样本,一名患者和三名接触者显示存在革兰氏阳性细长杆菌,楔形排列,革兰氏染色的细胞浸润较少,艾伯特染色中几乎没有变色颗粒。白喉梭菌在碲化钾琼脂上生长。所有分离株的抗菌谱相似,对红霉素的抗性和对青霉素的敏感性。通过PCR确认分离物并检测ToxA基因。接触者用青霉素处理,重复拭子为阴性。
结论:目前的健康统计数据和这项研究表明,印度与白喉的斗争远未结束。它仍然潜伏在一些偏远地区。需要保持警惕,继续追踪,治疗接触者以降低感染率。鉴于死灰复燃,政府已发出指令,在UIP中将TT替换为Td。尽管如此,还有很多事情要做.
BACKGROUND: Diphtheria is an infectious disease caused by gram-positive bacilli C. diphtheriae involving nasal, pharyngeal, tonsillar, or laryngeal mucus membranes. The mortality rate is as high as 20%, with India contributing almost 78% of the world incidence.
OBJECTIVE: We report a fatal
case of nasopharyngeal diphtheria with carrier study in close contacts.
METHODS: Seven years child presented with fever, throat pain, and earache for 3 days followed by neck swelling and noisy respiration. On examination, membrane was present in the throat, which was received for Albert and Gram staining and reported as positive for C. diphtheria like organisms followed by culture. The patient was treated with ADS and antibiotics, and intensively managed, but still succumbed to death. Follow-up was done for carriage of C. diphtheriae on the throat and nasopharyngeal swabs of siblings and close contacts. It was isolated in 3 of them. Samples were processed for Gram, Albert stain, and culture. Identification, antibiotic sensitivity, and toxigenicity were done.
CONCLUSIONS: Four samples, one from the patient and three from contacts showed the presence of gram-positive slender bacilli with cuneiform arrangement, less cellular infiltrate on the Gram stain, and the presence of few metachromatic granules in the Albert stain. C. diphtheriae was grown on Potassium Tellurite agar. Antibiogram of all isolates was similar with resistance to Erythromycin and sensitivity to Penicillin. Isolates were confirmed by PCR and ToxA gene was detected. Contacts were treated with Penicillin and repeat swabs were negative.
CONCLUSIONS: Present health statistics and this study suggests, fight against diphtheria in India is far from being over. It still lurks in some remote areas. It is a need to remain vigilant, keep tracing, and treating contacts to curtail down the rate of infection. In view of the resurgence, Government has given directives to replace TT with Td in UIP. Still, a lot needs to be done.