儿内科疑似轮状病毒感染暴发的调查与预防策略

 目的 对一起疑似轮状病毒医院感染暴发事件进行调查分析，为医院感染预防与控制提供参考。方法 采用现场流行病学调查方法，对2021年3月26日—4月5日某三级医院发现的6例轮状病毒感染患儿进行调查和环境卫生学监测，分析其发生的主要环节因素并采取有效的控制措施。结果 2021年3月26日—4月5日入住儿内科>48 h的患者共59例，6例患者感染轮状病毒，罹患率为10.17%。6例患儿中男性4例，女性2例；平均年龄（1.61±1.21）岁；患儿入院时间集中在3月19—30日，均在入院第5~7天检出轮状病毒，6例患儿分别为同一责任护理组，且22、23、25床为同一病室。对6例患儿住院期间的环境物体表面、医护及患儿陪护人员的手进行轮状病毒筛查，共采样22份，结果阴性20份，弱阳性2份（床头柜和床栏），检出率9.09%。该事件共持续11 d，自4月5日采取控制措施后未发现相关病例。结论 此次事件是发生在儿内科的一起由轮状病毒感染引起的疑似医院感染暴发事件，通过采取加强患者及陪护管理，固定医护治疗人员，加强病区环境清洁消毒，提升医务人员手卫生依从性和正确性，重视保洁流程等多项措施，得到了及时、有效的控制。

Investigation and prevention strategy of suspected rotavirus infection outbreak in department of pediatric internal medicine

Objective To investigate and analyze an outbreak event of suspected rotavirus healthcare-associated infection (HAI), provide reference for the prevention and control of HAI. Methods Using on-site epidemiological investigation method, 6 children with rotavirus infection in a tertiary hospital from March 26 to April 5, 2021 were investigated, environmental hygiene was monitored, the main relevant factors were analyzed, and effective control measures were taken. Results From March 26 to April 5, 2021, 59 patients were admitted to department of pedia-tric internal medicine for more than 48 hours, 6 patients were infected with rotavirus, incidence was 10.17%. Among 6 children, 4 were males and 2 were females; the mean age was (1.61±1.21) years; admission time of children was on March 19-30, all children were isolated rotavirus on the 5th to 7th day of admission, 6 children were in the same nursing group, beds 22, 23 and 25 were in the same ward. Rotavirus screening was performed on the surface of environmental objects, hands of health care workers(HCWs) and caregivers of 6 children during hospita-lization period, a total of 22 specimens were taken, 20 were with negative and 2 were with weakly positive (bedside tables and bed rails) results, isolation rate was 9.09%. The event lasted for 11 days, and no relevant cases were found since the control measures were taken on April 5. Conclusion This event is a suspected outbreak of HAI caused by rotavirus infection in the department of internal medicine, infection is timely and effectively controlled through strengthening the management of patients and caregivers, stabling medical treatment personnel, strengthening the cleaning and disinfection of ward environment, improving the compliance and correctness of hand hygiene of HCWs, and paying attention to cleaning process.