In-hospital contact investigation among health care workers after exposure to smear-negative tuberculosis

Background  

Smear-negative pulmonary tuberculosis (TB) accounts for a considerable proportion of TB transmission, which especially endangers health care workers (HCW). Novel Mycobacterium-tuberculosis-specific interferon-γ release assays (IGRAs) may offer the chance to define the burden of TB in HCW more accurately than the Mantoux tuberculin skin test (TST), but the data that is available regarding their performance in tracing smear-negative TB in the low-incidence, in-hospital setting, is limited. We conducted a large-scale, in-hospital contact investigation among HCW of a German university hospital after exposure to a single case of extensive smear-negative, culture-positive TB with pulmonary involvement. The objective of the present study was to evaluate an IGRA in comparison to the TST and to identify risk factors for test positivity.     

传染病医院医务人员结核感染状况

目的了解传染病医院医务人员结核(TB)感染现况,探讨其感染TB的危险性及影响因素。方法对某传染病医院的全体医务工作者进行问卷调查和TB菌素纯蛋白衍化物（PPD）试验检测。结果该传染病医院全体职工TB感染发病率为48.18%。不同科室医务工作者的TB感染情况差异无统计学意义（P＞0.05）,不同工作年限、不同年龄、不同职称的医务工作者TB感染情况差异均有统计学意义（均P＜0.05）。文化程度、职称、目前居住情况、在结核感染门诊或病区的工作时间是TB感染的危险因素,其OR(95%CI)分别为1.70（1.03～2.80）、1.95（1.10～3.45）、1.84（1.03～3.28）、2.38（1.40～4.04）;个人防护是TB感染的保护因素［OR及OR95%CI为0.92（0.85～0.99）］。结论传染病医院的医务工作者是TB感染的高危人群,应加强自我防护意识,及早采取防护措施。     

医疗卫生机构医务人员结核病感染控制现状

目的分析我国医务人员结核感染和患病情况以及相应的危险因素,为加强医疗卫生机构医务人员的结核病感染预防控制工作提供理论依据。方法采取系统综述的方法,对1995-2010年关于医疗卫生机构中医务人员结核感染和患病情况及其影响因素的相关文献资料进行综合分析。结果我国关于医务人员结核感染预防控制方面的研究很欠缺。文献资料显示,我国医务人员的结核感染率明显高于普通人群,其PPD阳性率达60.4%～62.8%;医务人员的结核病患病率也比一般人群高,达6.7/1 000人年。对医务人员感染结核的危险因素分析显示,其结核感染和患病风险主要与在工作场所暴露和感染预防控制措施不足等有关。结论医务人员的结核感染控制工作十分薄弱,相关研究不足,目前已成为我国结核病控制面临的重要问题。     

Occupational risk of Mycobacterium tuberculosis infection in hospital workers

We conducted a 4-year (1/89–12/92) retrospective cohort study among employees at a large metropolitan hospital where a nosocomial outbreak of multidrug-resistant tuberculosis (TB) had occurred. We compared the risk of tuberculin skin test (TST) conversion among employees who worked on wards where patients with culture-confirmed TB were cared for (“exposed”) with the risk among employees who worked on wards with no such patients (“unexposed”). Exposed employees had a higher 4-year risk of TST conversion (14.5%) than unexposed employees (1.4%) (adjusted relative risk 13.4; 95 percent confidence interval 5.1–35.2). Exposed employees had significantly higher risks of conversion than unexposed employees during 1989–91, but not for 1992. Among the exposed, ward clerks had a risk of conversion (15.6%) only slightly lower than nurses (18.2%). We conclude that employees who worked in areas where patients with active M. tuberculosis infection were cared for, including workers who did not provide direct patient care, had a higher risk of TST conversion than employees who did not work in these areas. Reasons for the decline in risk over time include outbreak termination, fewer admissions of patients with TB, implementation of effective infection control measures, and possible resistance to infection in some members of the study population. Am. J. Ind. Med. 32:528–534, 1997. © 1997 Wiley-Liss, Inc.     

结核病专科医院医务人员结核感染风险研究

目的 探讨结核病专科医院医务人员职业暴露危险因素,以采取有效地预防控制措施降低结核感染风险.方法 采用整群抽样的方法,进行问卷调查,采集基本信息,对受试人群进行结核菌素试验(PPD)和T细胞斑点试验(T-SPOT.TB)检测.结果 共有符合条件的497人纳入本研究,98.59％认为自己在工作中有机会接触结核病患者,81.89％工作时佩戴口罩,82.70％接种过卡介苗;受试者中,PPD试验阳性率为66.60％,T-SPOT.TB试验阳性率较低,为10.87％,两种试验结果在医院内不同职业人群间差异无统计学意义,PPD试验阳性率与工作年限有相关性(x2=11.1936,P=0.0107),而T-SPOT.TB试验结果与工作年限无明显相关.结论 加强全体医务人员,特别是行政管理人员和新上岗医务人员的个人防护和健康教育有重要意义.     

医务人员血源性病原体职业暴露调查

目的了解医务人员发生血源性病原体职业暴露的特点和危险因素,探讨防治对策。方法采用回顾性调查方法,运用《医务人员血源性职业暴露登记表》对某院2013年1月1日—2015年12月31日发生的血源性病原体职业暴露事件进行调查分析。结果共发生血液/体液职业暴露246例。职业暴露人群以在职护士为主(95例,占38.62%);职业暴露发生地点主要为病房(148例,60.16%);职业暴露方式以锐器伤为主(219例,占89.02%);医务人员发生职业暴露时的操作环节主要为手术意外(69例,占28.05%);暴露源主要为乙型肝炎病毒(HBV),共123例(占50.00%);暴露医务人员经局部处理和预防用药后,无1例发生感染。结论医疗机构应加强医务人员血源性病原体职业暴露相关培训,提高防护意识,规范操作行为,改善工作环境,最大限度地减少职业暴露的发生。     

Prevalence of HCV infection among health care workers in a hospital in central Italy

Health care workers are at risk of acquiring transmissible diseases. Controversial results have been reported about HCV. The aims of the present study are to assess the prevalence of HCV in health care workers in Pistoia General Hospital (central Italy) and to compare prevalence with other groups, particularly with a sample of the general population. Serum samples collected from 511 health care employees engaged in direct clinical task and 222 clerical and nurse school attendees have been tested by ELISA and confirmed by RIBA. Total seroprevalence was 3.8%:4.7% in the first group; 1.8% in the second group. The data showed a slight increase in prevalence by age and not by length of stay in the health care workers' group. Comparison of HCV prevalence with blood donors from the province of Pistoia and the general population from Sersale (Catanzaro, southern Italy), restricted to under-40 subjects, indicates an increasing trend in this order: Blood donors, general population, clerical and nursing school attendees, health care workers' group with the highest value (3.4%). A cohort study is needed to evaluate pattern of HCV seroconversion.     

医务人员手卫生依从性调查

目的对某院医务人员手卫生采取综合干预措施,比较干预前后医务人员手卫生执行情况,评价干预效果。方法2013年4-6月为该院医务人员手卫生基线调查阶段,2013年7月开始实施干预,2013年10-12月为干预后效果评价阶段。调查人员利用调查表,隐蔽观察医务人员手卫生执行情况。 结果通过多种干预措施,医务人员手卫生依从率为53.86%,显著高于干预前的38.02%,差异有统计学意义（χ2=181.82,P＜0.05）;内科、外科、重症监护室手卫生依从率均高于干预前（均P＜0.05）。干预后,不同操作时机医务人员整体手卫生依从率为53.45%(2 044/3 824),显著高于干预前的41.87%(1 740/4 156)（χ2=107.2,P＜0.05）;除无菌操作,其余4个操作时机医务人员手卫生依从率均高于干预前（均P＜0.05）;不同岗位医务人员手卫生依从率均高于干预前（均P＜0.05）。结论采取积极的手卫生干预措施,可有效提高医务人员手卫生依从性。     

中国医务人员职业暴露与防护工作的调查分析

目的了解医务人员职业暴露与防护工作现状,为制定职业暴露防护措施提供依据。方法采用分层抽样方法于2016年4月6日—5月6日向全国13个省份158所不同级别医院发放调查问卷进行调查,分别调查各所医院开展职业暴露监测首年、2010年及2015年的职业暴露与防护管理及监测情况。结果81.65%（129/158）的医院医务人员职业暴露管理工作由医院感染管理部门负责;98.73%（156/158）的医院制定了相关规章制度;77.22%（122/158）的医院存在医务人员职业暴露漏报现象。共发生职业暴露事件11 116例,调查首年发生1 542例,2010年发生2 474例,2015年发生7 100例。锐器伤在各类职业暴露类型中占96.76%;职业暴露人员职业分布中,护理人员占53.90%;职业暴露人员科室来源主要为普通病房、手术室、重症监护病房等;引起医务人员职业暴露器具主要为注射器、头皮钢针、手术缝针等;静脉注射、针头丢入利器盒、手术缝针等是引起医务人员职业暴露的高危操作;在职业暴露源阳性分布中,以乙型肝炎病毒（HBV）为主,占58.69%。结论我国医务人员面临职业暴露的风险大,危害重,形势严峻,应通过政府立法、推广应用安全器具、规范医务人员操作行为、正确使用个人防护用品、强化医务人员教育与培训、建立健全职业暴露报告、评估和随访机制等措施,以切实减少职业暴露的发生。     

江苏省扬州市部分医务人员吸烟行为及控烟知识现状调查

目的对江苏省扬州市医务人员的吸烟行为和控烟知识现状进行调查,为今后在医务人员群体中实施控烟干预提供依据。方法采用问卷调查的方法,对扬州市4家医疗机构605名直接从事医务工作的人员进行问卷调查。结果医务人员人群总吸烟率为16.03%,现在吸烟率为11.57%;烟草危害的知晓率为73.61%,7种吸烟相关疾病的知晓率为71.00%,6种被动吸烟相关疾病的知晓率为77.60%;对医疗机构控烟认同率为83.63%;43.46%的医务人员获得过控烟方面的知识培训,能为病人制定戒烟计划的有1.69%;能对病人在门诊和病房提供健康教育的有31.40%。结论医务人员人群烟草相关知识掌握相对不足,应当进一步加强医务人员控烟知识和技能的健康教育和培训,改变其吸烟行为,同时也更好地推动社会控烟工作。     

肺结核可疑症状者求医行为模式及影响因素

我国是全球22个结核病高负担国家之一^[1].提高患者发现率是我国控制结核病的重点和难点,而肺结核可疑症状者的求医行为模式是决定发现率的关键因素.国外对肺结核可疑症状者求医行为模式的研究多是以社区为基础,而我国的研究则多以医院为基础,鲜见针对社区人群的研究^[2,3],其结论难以代表社区中全部可疑症状者.为此本文综述肺结核可疑症状者的求医行为及影响因素,为改善求医行为模式,提高我国结核病患者发现率提供参考依据.     

某院医务人员职业暴露监测

目的了解医务人员发生职业暴露人群的分布特征、危险因素与风险环节。方法对某院所有医务人员2011年1月—2014年6月发生的职业暴露进行风险监控,分别从发生职业暴露者的职业类别,暴露的地点、环节以及方式进行数据统计。结果 286例次职业暴露者中,男性63例(22.03%),女性223例(77.97%);2011年111例次(38.81%),2012年75例次(26.22%),2013年67例次(23.43%),2014年1—6月份33例次(11.54%);对不同人群发生职业暴露者统计数据显示,各年度不同人群发生职业暴露所占百分比相似,由高到低依次为护士(31.97)%、医师(19.90%)、护工(15.79%)、技师(7.64%)、护师(4.17%)和保洁员(2.84%);整理废物、拔针或更换针头、丢弃锐器入利器盒、手术缝合或器械传递、各种穿刺(含抽血)操作时的锐器伤是医务人员发生职业暴露损伤的主要风险环节,其构成比分别为22.38%、19.58%、14.34%、12.94%和11.19%;各年度职业暴露发生地点相似,主要是病房、手术室和注射(治疗)室,其构成比分别为51.40%、19.58%和11.54%。结论医院应建立完善的职业暴露监控与风险管理体系,强化标准预防,加强对职业暴露高危人群的培训,对风险环节及危险因素进行监控和干预,以有效降低医务人员职业暴露发生率。     

Assessment of knowledge and practice of health workers towards tuberculosis infection control and associated factors in public health facilities of Addis Ababa,Ethiopia: A cross-sectional study

Background

Tuberculosis is the leading causes of mortality among infectious diseases worldwide. The risk of transmission from patients to health workers is doubles that of the general population. The close contact to the infectious case before diagnosis is the major risk for tuberculosis infection. The aim of the study was to assess knowledge and practice of health professionals towards tuberculosis infection control and its associated factors in health facilities of Addis Ababa, Ethiopia.

Methods

A cross-sectional study was conducted from February 29 to April 15/2014 in selected health facilities in Addis Ababa. Five hundred ninety health workers were included in the study. The sample size was assigned to each health facility proportional to their number of health workers. Study subjects were selected from each stratum by simple random sampling technique. Interviewer administered structured questionnaire was used to collect information. Logistic regression was used to identify factors associated with knowledge and practice of health workers towards tuberculosis infection control.

Result

Five hundred eighty two participants with 98.6% response rate were involved in the study. Of these, 36.1% had poor knowledge and 51.7% unsatisfactory practice score towards tuberculosis infection control. Having more than six years working experience in health facility (AOR = 2.51; 95% CI: 1.5-4.1) and tuberculosis related training (AOR = 2.51 95% CI; 1.5, 4.1) were significantly associated with knowledge on tuberculosis infection control. Having experience in tuberculosis clinic (AOR =1.93; 95% CI: 1.12, 3.34) and tuberculosis related training (AOR = 1.48; 95% CI: 1.87, 2.51) were significantly associated with practice on tuberculosis infection control.

Conclusion

One third of health workers had relatively poor knowledge and nearly half of them had unsatisfactory practice on tuberculosis infection control. Tuberculosis training and work experiences in health facility are determinant factor to knowledge. Whereas tuberculosis related training and experience in tuberculosis clinic are predictor to practice. So, training of the health professionals, on job orientations of junior health workers, and farther study including private health workers are recommended.     

某院医务人员血源性职业暴露的流行病学研究

目的掌握某院医务人员血源性职业暴露的流行病学特征。方法采用随机偶遇的方法对该院374名临床医务人员进行回顾性问卷调查。结果医务人员职业暴露后处理内容和处理流程正确率分别为54.81%（205/374）、89.84%（336/374）。 共发生血源性职业暴露174例、533例次,暴露率为46.52%(174/374)。不同科室、岗位医务人员职业暴露率比较,差异有统计学意义(P＜0.05);外科、儿科和内科的医务人员暴露率较高,分别为64.46%（78/121）、60.00%（18/30）和40.00%（50/125）;护士和医生暴露率较高,分别为51.52%（102/198）、47.27%（52/110）。医务人员血源性暴露时间主要集中在上午和晚上,穿刺、采血或处理物品为主要的暴露环节,暴露地点主要是病房和手术或换药室。结论该院医务人员血源性职业暴露率较高,应加强医院高危科室、人员和操作的血源性职业暴露防控措施的落实。     

医务人员结核病相关知识与实施防护措施调查

目的了解综合性医疗机构医务人员结核病相关知识及职业防护的知晓情况。方法采用结核病防治知识问卷,对某综合医院临床科室医务人员进行结核病相关知识及职业防护行为的问卷调查。结果共收回有效问卷333份,医务人员对结核病相关知识的正确应答率为62.84%～93.09%;国家针对结核病政策方面的内容,医务人员正确应答率为59.52%～77.27%。医务人员中结核病相关知识知晓组与不知晓组职业防护措施实施率［（10.74%～79.34%）vs（10.38%～82.55%）］无明显差异（P＞0.05）,但知晓组每次参加医院组织的定期体检的实施率（92.56%）高于不知晓组（79.25%）,差异有统计学意义（P＜0.05）。结论 综合性医疗机构的医务人员应强化结核病相关知识培训,落实职业防护措施。     

某三级综合医院医务人员职业暴露调查

目的了解某三级综合医院医务人员职业暴露情况,分析职业暴露发生原因及预防对策。方法对某院2010年1月—2013年12月134例发生职业暴露的医务人员进行调查。结果暴露人群中,护士所占比率最高(59.70%),其次是医生(19.40%)、医技人员(9.70%)。职业暴露主要原因为锐器管理不规范(占46.27%,62例),其次为操作意外(占42.54%,57例)、防护措施不足所致(占11.19%,15例);暴露方式以锐器伤为主(占94.78%,127例),黏膜接触暴露占5.22%(7例),暴露源不明确者占42.54%,暴露源明确者占57.46%,其中乙型肝炎病毒(HBV)、丙型肝炎病毒(HCV)、梅毒螺旋体(TP)、人类免疫缺陷病毒(HIV)分别占35.82%、12.69%、3.73%、2.24%;HBV、HCV合并感染占2.24%(3例);HIV、HBV、HCV、TP合并感染占0.74%(1例)。职业暴露后正确处理率为95.52%。结论护士是职业暴露高危群体,做好职业防护,并规范锐器管理,可以减少医务人员职业暴露发生。     

Occupational health policies and practices related to tuberculosis in health care workers in KwaZulu-Natal,South Africa

Setting:

Three district hospitals in KwaZulu-Natal, South Africa, with specialized drug-resistant tuberculosis (TB) wards.

Objective:

To increase understanding of the implementation of occupational health (OH) and infection control (IC) guidelines for the prevention and control of TB among health care workers (HCWs).

Design:

An operational cross-sectional study conducted between July and September 2011, consisting of interviews with OH and IC nurses and chart review of OH medical records.

Results:

Although general national and provincial OH policies are in place, no specific OH policies exist for hospital settings. Two of three hospitals had a full-time OH nurse and all had a full-time IC nurse. All hospitals offered TB symptom screening; however, only 19% of HCWs were screened in 2010. TB incidence among HCWs was 1958 per 100 000 population in 2010. All hospitals offered HIV counseling and testing; however, only 22% of staff were tested across sites. Two hospitals offered isoniazid preventive therapy to HIV-positive staff and reassigned these staff to low TB risk areas.

Conclusions:

While OH policies and procedures are in place, implementation of these policies and procedures is inconsistent. This potentially places HCWs at risk of acquiring TB. These findings support the need for strengthening OH and IC services to prevent TB.     

如何预防医务人员COVID-19感染：来自中国武汉的经验

 在新型冠状病毒肺炎（COVID-19）大流行的背景下,全球已有数以千计的医务人员感染新型冠状病毒（SARS-CoV-2）,并有人因此失去生命。在疫情早期,中国发生了医务人员感染。由于对SARS-CoV-2的特点认识有限,湖北有3,000多名医务人员在疫情暴发初期感染了SARS-CoV-2。由于当地医院医务人员工作超负荷,超过4.2万名医务人员（包括军队医务人员）,从全国各地被派往湖北。在疫情最严重的时期,中国有十分之一的重症监护医生在武汉工作。在中国抗击COVID-19的过程中,虽然在疫情早期发生了一定数量的医务人员感染SARS-CoV-2,但通过及时采取预防措施,包括快速诊断,及时对患者进行隔离,强调医务人员的安全,加强医务人员基本防护知识培训和统一管理等有效防护措施,国家援鄂医疗队42,632名队员最终未报告感染,并且当地医院医务人员感染病例显著减少,说明医务人员院内感染COVID-19是完全可以预防的。本文旨在阐述中国武汉疫情期间,如何通过采取有效措施预防医务人员感染SARS-CoV-2。     

医务人员血源性职业暴露调查及其对策

目的了解医务人员职业暴露现状,分析发生原因及危险因素,为采取有效防护措施提供依据。方法采用回顾性调查方法,对某院2013年1月1日—2016年12月31日发生的职业暴露事件进行调查分析。结果该院共发生职业暴露632例次。职业暴露发生以护士为主,共392例次,占62.02%;主要发生于工作年限不满2年的医务人员,共387例次,占61.23%。医务人员发生职业暴露的时机居前三位的分别是在输液完毕拔针、集中处置使用过的锐器物及针头以及手术缝合时,分别占15.19%、14.71%和12.18%。导致锐器伤发生的器械中,头皮钢针所占比例最大,共137例次,占23.42%;其次是缝合针,96例次,占16.41%。职业暴露血源性病原体以乙型肝炎病毒为主,占58.86%,其次是未知暴露源导致的职业暴露,占18.04%;职业暴露地点主要发生在普通病房(38.61%)。结论应加强职业安全防护教育,提高医务人员预防职业危害的能力,规范具有潜在危险的操作行为,加强医疗废物分类与管理,从而降低医务人员职业暴露所带来的危害。