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Microbiology laboratory consolidation: Optimizing diagnostic efficiency and service quality—A case study from Dubai Health, United Arab Emirates 微生物实验室整合:优化诊断效率和服务质量——以阿拉伯联合酋长国迪拜卫生局为例
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-10-06 DOI: 10.1016/j.ijregi.2025.100779
Rubina Lone , Adnan Alatoom , Anju Nabi , Bhavna Mathur , Maya Habou , Rubina Monga , Rupa Varghese , Sam Daniel , Shalinder Kour Hooda , Sujith Joseph , Hiba Saud Othman Alhumaidan

Objectives

This case study evaluated the 2024 consolidation of microbiology laboratory services within Dubai Health’s network, aiming to enhance diagnostic efficiency, reduce costs, and standardize service quality across tertiary hospitals, primary health care centers, and medical fitness centers.

Methods

A hub-and-spoke model was implemented, with Al Jalila Children’s Specialty Hospital as the central hub for non-urgent testing and rapid response laboratories at peripheral sites for urgent testing. The phased approach included infrastructure upgrades, standardized protocols, optimized transport logistics, and a unified laboratory information system. Performance metrics included sample delivery rates, cost reductions, specimen rejection rates, proficiency testing, and test volume changes.

Results

Consolidation achieved a 98.57% on-time delivery rate for routine samples and 97.90% for critical samples. Operational costs dropped by 6.1% for reagents, 62.7% for proficiency testing, and 19.01% for workforce, despite a 10.9% test volume increase. Specimen rejection rates decreased from 0.50% to 0.05%, and proficiency testing performance improved to 99.59%. The current procedural terminology code optimization boosted revenue.

Conclusions

Dubai Health’s hub-and-spoke model enhanced efficiency, reduced costs, and standardized quality, offering a scalable framework for global health care systems. In addition to demonstrating enhanced efficiency and cost savings, this study provides insights from the Gulf region where published data remain limited. By outlining practical strategies, such as phased redeployment, robust transport logistics, and continuous clinical engagement, this work offers a scalable model adaptable not only to Gulf countries but also to diverse health care systems worldwide.
本案例研究评估了2024年迪拜卫生网络内微生物实验室服务的整合,旨在提高三级医院、初级卫生保健中心和医疗健身中心的诊断效率、降低成本和标准化服务质量。方法采用轮辐模式,以Al Jalila儿童专科医院为中心枢纽进行非紧急检测,在周边站点建立快速反应实验室进行紧急检测。分阶段的方法包括基础设施升级、标准化协议、优化运输物流和统一的实验室信息系统。性能指标包括样品交付率、成本降低、样品拒绝率、熟练测试和测试量变化。结果常规样品和关键样品的准时递送率分别为98.57%和97.90%。尽管测试量增加了10.9%,但试剂的运营成本下降了6.1%,能力测试成本下降了62.7%,劳动力成本下降了19.01%。样品拒绝率由0.50%下降到0.05%,熟练度测试性能提高到99.59%。当前的程序术语代码优化提高了收益。迪拜健康中心的轮辐模式提高了效率,降低了成本,标准化了质量,为全球卫生保健系统提供了一个可扩展的框架。除了证明提高效率和节省成本之外,该研究还提供了来自海湾地区的见解,该地区的公开数据仍然有限。通过概述实际战略,如分阶段重新部署、稳健的运输物流和持续的临床参与,这项工作提供了一个可扩展的模型,不仅适用于海湾国家,也适用于全球各种卫生保健系统。
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引用次数: 0
Environmental sampling reveals reservoirs of antimicrobial resistance in a tertiary care Indian hospital: an observational study to strengthen infection control practices 环境采样揭示了印度三级保健医院的抗菌素耐药性水库:一项加强感染控制实践的观察性研究
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-10-05 DOI: 10.1016/j.ijregi.2025.100782
Kumari Vandana Singh, Mamta Puraswani, Aparna Ningombam, Ashita Ashita, Judy Mol Thomas, Neha Kumari Ambashta, Rasmi Rekha Deuri, Shoney Sam, Divya Ranic, Dennis Victor, Jacinta Gunjiyal, Kamran Farooque, Purva Mathur

Objectives

This study was designed to assess the bacterial profile and their phenotypic and genotypic antimicrobial resistance pattern in samples from a level I trauma center in India.

Methods

A total of 387 samples were collected from surfaces, equipment, water, and hand swabs of intensive care units (ICUs), wards, and other hospital locations between May 2021 and July 2022 and analyzed for bacterial identification (MALDI-TOF), antimicrobial susceptibility (Vitek2), extended-spectrum beta-lactamase (ESBL and AmpC), and carbapenemase genes.

Results

The majority of isolates (91.5%) were Gram-negative; 44.1% of Gram-negative isolates were either multidrug-resistant (MDR) or extensively drug-resistant (XDR), with MDR being most common in Acinetobacter spp. (54.5%) and XDR in Escherichia coli (37.8%). Isolates also have a high prevalence of ESBL (55.5%), AmpC (45%), and carbapenemase (64.7%) genes. Isolates from ICUs and equipment had a significantly higher resistance and MDR percentage (34.5%, 38.7%). ICU isolates also have a significantly higher prevalence of carbapenemase genes (76%).

Conclusions

This study provides baseline data on antimicrobial resistance within the hospital and underlines the role of ICUs and equipment in cross-contamination, which can be used to devise evidence-based infection control practices.
目的本研究旨在评估来自印度一级创伤中心样本的细菌特征及其表型和基因型抗菌素耐药性模式。方法于2021年5月至2022年7月从重症监护病房(icu)、病房和其他医院地点的表面、设备、水和手拭子中采集387份样本,进行细菌鉴定(MALDI-TOF)、抗菌药物敏感性(Vitek2)、广谱β -内酰胺酶(ESBL和AmpC)和碳青霉烯酶基因分析。结果革兰氏阴性菌占91.5%;44.1%的革兰氏阴性分离株为多药耐药(MDR)或广泛耐药(XDR),其中多药耐药(MDR)最常见于不动杆菌(54.5%),广泛耐药(XDR)见于大肠杆菌(37.8%)。分离株也具有较高的ESBL(55.5%)、AmpC(45%)和碳青霉烯酶(64.7%)基因患病率。icu和设备分离株的耐药率和耐多药率分别为34.5%和38.7%。ICU分离株碳青霉烯酶基因的患病率也明显较高(76%)。结论本研究提供了医院内抗菌素耐药性的基线数据,并强调了icu和设备在交叉污染中的作用,可用于制定循证感染控制措施。
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引用次数: 0
Advanced HIV disease at diagnosis among newly diagnosed people with HIV in rural eastern Uganda: a retrospective cohort study 乌干达东部农村新诊断的艾滋病毒感染者中诊断为晚期艾滋病毒疾病:一项回顾性队列研究
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-10-04 DOI: 10.1016/j.ijregi.2025.100778
Saadick Mugerwa Ssentongo , Saidi Appeli , Jonathan Izudi

Objectives

Advanced HIV disease (AHD) at diagnosis substantially contributes to HIV-related morbidity and mortality but has been understudied. We determined the prevalence and factors associated with AHD at diagnosis among newly diagnosed people with HIV (PWH) in rural eastern Uganda.

Methods

We conducted a retrospective cohort study of newly diagnosed PWH between May 2020 and July 2023 across 23 public health facilities in 14 districts in rural eastern Uganda. AHD at diagnosis was defined by a cluster of differentiation 4 count <200 cells/µL or World Health Organization clinical stage 3-4 disease. A generalized linear mixed model was used to identify factors associated with AHD at diagnosis.

Results

Among 1233 participants, we found that 24/1233 (1.9%) had AHD at diagnosis. In adjusted analysis, AHD at diagnosis was independently associated with being male rather than female (adjusted odds ratio, 3.84; 95% confidence interval, 1.53-9.61).

Conclusions

The low prevalence of AHD at diagnosis among newly diagnosed PWH suggests progress toward earlier diagnosis in rural eastern Uganda. Men tended to present with AHD at diagnosis more than women, although the finding is imprecise. Our findings highlight the need for targeted, gender-sensitive interventions to promote early diagnosis and care linkage.
目的晚期HIV疾病(AHD)在诊断时与HIV相关的发病率和死亡率有很大关系,但尚未得到充分研究。我们确定了乌干达东部农村新诊断的HIV感染者(PWH)中AHD的患病率和与AHD诊断相关的因素。方法:我们在乌干达东部农村14个地区的23家公共卫生机构对2020年5月至2023年7月期间新诊断的PWH进行了回顾性队列研究。AHD在诊断时被定义为分化4计数<;200细胞/µL或世界卫生组织临床3-4期疾病。采用广义线性混合模型在诊断时识别与AHD相关的因素。在1233名参与者中,我们发现24/1233(1.9%)在诊断时患有AHD。在校正分析中,诊断时的AHD与男性而非女性独立相关(校正优势比为3.84;95%可信区间为1.53-9.61)。结论新近诊断的PWH中AHD的低患病率表明乌干达东部农村地区在早期诊断方面取得了进展。男性比女性更倾向于在诊断时表现出adhd,尽管这一发现并不精确。我们的研究结果强调需要有针对性的、对性别问题敏感的干预措施,以促进早期诊断和护理联系。
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引用次数: 0
Metagenomics next-generation sequencing for diagnosis of invasive fungal diseases in patients with hematological diseases 新一代宏基因组测序用于血液病患者侵袭性真菌病的诊断
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-10-03 DOI: 10.1016/j.ijregi.2025.100780
Xi Chen , Hongchao Qin , Yuhua Song , Yun Lian , Qiqiang Long

Objectives

To investigate the clinical characteristics and risk factors of invasive fungal disease (IFD) in patients with hematological disorders.

Methods

From January 2023 to January 2025, 67 patients with blood diseases hospitalized at the Hematology Department who were suspected of infection with IFD underwent metagenomic next-generation sequencing (mNGS) and fungal pathogen detection. Their clinical characteristics and laboratory examinations were retrospectively analyzed.

Results

A cohort of 67 patients was enrolled in the study, among which 32 cases were diagnosed with IFD through mNGS and etiological culture, while no fungal pathogens were detected in the remaining 35 cases. The diagnostic yield of mNGS for fungal infection detection (47.76%) demonstrated superior sensitivity compared to conventional pathogenic microbial culture (14.93%), β-D-glucan assay (11.94%), and galactomannan assay (2.99%). Within the IFD cohort, Candida species constituted the most prevalent etiology (46.88%, n = 15), followed by Aspergillus (18.75%, n = 6), Penumocystis (12.5%, n = 4), and Rhizomucor (12.5%, n = 4), with other fungal species accounting for the remaining cases (9.37%, n = 3). Multivariate logistic regression analysis revealed six independent risk factors associated with IFD in patients with hematological disorders: cluster of differentiation 4+ T cell count <400 cells/µL (odds ratio [OR] = 9.45, P = 8.9×10–5), elevated C-reactive protein (OR = 3.18, P = 0.027), elevated interleukin (IL)-6 (OR = 5.75, P = 0.001), elevated IL-10 (OR = 3.31, P = 0.033), hypoproteinemia (OR = 42.17, P = 0.013), and neutropenia lasting for more than 10 days (OR = 4.11, P = 0.015).

Conclusions

mNGS has high sensitivity in detecting IFD in patients with hematological diseases. Cluster of differentiation 4+ cell count below 400/uL, increased level of C-reactive protein, IL-6, and IL-10, hypoproteinemia, and neutropenia lasting for more than 10 days are independent risk factors for IFD in patients with hematological diseases.
目的探讨血液病患者侵袭性真菌病(IFD)的临床特点及危险因素。方法对2023年1月~ 2025年1月在血液科住院的67例疑似感染IFD的血液病患者进行宏基因组新一代测序(mNGS)和真菌病原体检测。回顾性分析其临床特点及实验室检查结果。结果共纳入67例患者,其中32例通过mNGS和病原学培养诊断为IFD,其余35例未检出真菌病原体。mNGS对真菌感染检测的诊断率(47.76%)优于传统病原微生物培养(14.93%)、β- d -葡聚糖(11.94%)和半乳甘露聚糖(2.99%)。在IFD队列中,念珠菌是最常见的病原,占46.88% (n = 15),其次是曲霉(18.75%,n = 6)、青孢霉(12.5%,n = 4)和根霉(12.5%,n = 4),其余真菌占9.37% (n = 3)。多元逻辑回归分析显示六个独立的危险因素与IFD血液疾病患者:集群的区别4 + T细胞计数& lt; 400细胞/µL(比值比(或)= 9.45,P = 8.9×纯)、c反应蛋白升高(或= 3.18,P = 0.027),高架白介素(IL) 6(或= 5.75,P = 0.001),升高IL - 10(或= 3.31,P = 0.033),低蛋白(或= 42.17,P = 0.013)和中性粒细胞减少持续超过10天(或= 4.11,P = 0.015)。结论ngs检测血液病患者IFD具有较高的敏感性。4+细胞计数低于400/uL、c反应蛋白、IL-6、IL-10水平升高、低蛋白血症、中性粒细胞减少持续10天以上是血液病患者IFD的独立危险因素。
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引用次数: 0
Dengue diagnosis in Guinea in two returning travelers from Côte d’Ivoire: a case report 两名从Côte科特迪瓦返回的旅行者在几内亚被诊断为登革热:一份病例报告
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-10-03 DOI: 10.1016/j.ijregi.2025.100777
Jacob Camara , Youssouf Sidibé , Giuditta Annibaldis , Barré Soropogui , Sarah Ryter , Moussa Condé , Eugène Kolie , Ibrahim Nourdine , Bakary Sylla , Carolina van Gelder , Nils Peter Petersen , Mette Hinrichs , Mamadou Diouldé Barry , Soua Koulemou , Bely Sonomy , Mariame Traore , Kaba Keïta , Mamadou Saliou Sow , Mamoudou Conde , Kaba Keïta , Sanaba Boumbaly
Dengue’s true burden on the African continent is likely underestimated. The majority of cases originate from West Africa, mostly from Burkina Faso. We report here the detection in Guinea of two imported cases of dengue in travelers returning from Côte d'Ivoire, one fatal (case 1) and one mild (case 2). Case 1 lived in Côte d’Ivoire and was diagnosed during a trip in Conakry, Guinea, on 14 August 2023, 9 days after symptom onset. He died on 21 August of an illness related to severe dengue; dengue virus serotype 3 (DENV-3) was further identified. Case 2 was diagnosed in N’Zérékoré, a forested region of Guinea, with serotype 1 (DENV-1) on 11 July 2024, 2 days after disease onset, while returning from Côte d’Ivoire. He was hospitalized for 9 days until full recovery. In-country phylogenetic analysis of case 2 DENV-1 revealed its linkage with urban dengue viruses known to circulate in West Africa. This timely detection, supported by enhanced diagnostics and genomic surveillance capacity in Guinea's laboratory network, highlights the need to strengthen surveillance systems for early detection of emerging viral infections, and emphasizes the importance of further monitoring dengue circulation dynamics in West Africa.
登革热对非洲大陆造成的真正负担可能被低估了。大多数病例来自西非,主要来自布基纳法索。我们在此报告在几内亚从Côte科特迪瓦返回的旅行者中发现了两例输入性登革热病例,1例致命(病例1),1例轻度(病例2)。病例1居住在Côte科特迪瓦,并于2023年8月14日,即症状出现后9天在几内亚科纳克里旅行期间得到诊断。他于8月21日死于与严重登革热有关的疾病;进一步鉴定出血清3型登革热病毒(DENV-3)。第二种情况是在恩泽雷科雷确诊的,几内亚的森林地区,与血清型1 (DENV-1) 2024年7月11日,发病后2天,而从科特迪瓦返回。他住院9天,直到完全康复。病例2 DENV-1的国内系统发育分析显示其与已知在西非流行的城市登革热病毒有关联。在几内亚实验室网络加强诊断和基因组监测能力的支持下,这一及时发现突出了加强监测系统以早期发现新发病毒感染的必要性,并强调了进一步监测西非登革热传播动态的重要性。
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引用次数: 0
Human parvovirus B19 infection in dengue patients and potential association with disease progression and clinical outcomes 登革热患者的人细小病毒B19感染及其与疾病进展和临床结果的潜在关联
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-09-29 DOI: 10.1016/j.ijregi.2025.100775
Nguyen Minh Nam , Nguyen Thi Lan Dung , Nguy Thi Diep , Le Van Khanh , Nguyen Thi Thuy Diu , Ha Van Quang , Ngo Thu Hang , Le Van Nam , Nguyen Linh Toan , Hoang Van Tong

Objectives

Many viruses can present with clinical symptoms resembling dengue fever (DF), including human parvovirus B19 (B19V). Therefore, patients with DF are not often tested for secondary pathogens. The current study aimed to investigate B19V infection and its association with clinical features in dengue patients.

Methods

A total of 230 subjects were recruited for this study, including patients with DF (n = 86), DF with warning signs (DWS, n = 53), and healthy controls (n = 91). Plasma samples were analyzed for B19V using enzyme-linked immunosorbent assay, nested polymerase chain reaction, sequencing, and phylogenetic analysis. The potential association between B19V infection and dengue progression was investigated.

Results

Anti-B19V immunoglobulin M antibodies were detected across all groups: 17.4% in the DF group, 7.5% in the DWS group, and 13.2% in healthy controls. Anti-B19V immunoglobulin G positivity was most prevalent in DF patients (26.7%), followed by healthy controls (22.0%) and DWS patients (20.8%). B19V DNA was identified in 10 of 139 dengue patients (7.2%), but not in healthy controls. The rate of B19V infection was significantly higher in DWS patients than in those with DF, suggesting that B19V infection during dengue may be associated with an increased risk of a more severe form of disease (odds ratio = 4.4, P = 0.043). B19V-positive dengue patients had lower platelet counts compared with B19V-negative patients (P = 0.046), although multivariate analysis revealed no significant difference. In addition, only genotype 1, specifically subgenotype 1A, was detected.

Conclusions

This study reports the prevalence of B19V infection in Vietnamese dengue patients and reveals a potential association with dengue progression and clinical features.
目的许多病毒可表现出类似登革热(DF)的临床症状,包括人细小病毒B19 (B19V)。因此,DF患者通常不进行继发病原体检测。本研究旨在调查登革热患者B19V感染及其与临床特征的关系。方法共招募230名受试者,包括DF患者(n = 86)、DF伴有预警信号(n = 53)和健康对照(n = 91)。采用酶联免疫吸附法、巢式聚合酶链反应、测序和系统发育分析对血浆样品进行B19V分析。研究了B19V感染与登革热进展之间的潜在关联。结果各组均检出抗b19v免疫球蛋白M抗体:DF组为17.4%,DWS组为7.5%,健康对照组为13.2%。抗b19v免疫球蛋白G阳性在DF患者中最为普遍(26.7%),其次是健康对照组(22.0%)和DWS患者(20.8%)。139例登革热患者中有10例(7.2%)检测到B19V DNA,但未在健康对照中检测到。DWS患者的B19V感染率明显高于DF患者,这表明登革热期间B19V感染可能与更严重疾病形式的风险增加有关(优势比= 4.4,P = 0.043)。b19v阳性登革热患者血小板计数较b19v阴性患者低(P = 0.046),但多因素分析显示差异无统计学意义。此外,仅检测到基因1型,特别是1A亚基因型。结论本研究报告了越南登革热患者中B19V感染的流行情况,并揭示了B19V感染与登革热进展和临床特征的潜在关联。
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引用次数: 0
Parechovirus meningitis in infants: report of the first cluster of cases in Saudi Arabia 婴儿Parechovirus脑膜炎:沙特阿拉伯首例聚集性病例报告
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-09-28 DOI: 10.1016/j.ijregi.2025.100772
Abdulnasir AlOtaibi , Ruba Alharbi , Ali A. Rabaan , Jaffar A. Al-Tawfiq
Parechoviruses (PeVs) are RNA viruses that belong to the Picornaviridae family. PeV-A is known to cause human disease, particularly in neonates and young infants. The symptoms of infection can range from mild febrile and respiratory illnesses to severe sepsis-like conditions and central nervous system (CNS) infections. In 2022, clusters of PeV infections were reported in various parts of the world, prompting public health agencies to issue a health advisory to alert physicians about circulating PeVs causing CNS infections in children. Reports of PeV infections in Gulf Council countries are scarce. We present here the clinical presentation and outcome of PeV CNS infections in a neonate and a young infant.
parechovirus (pev)是一种核糖核酸病毒,属于小核糖核酸病毒科。已知PeV-A可引起人类疾病,特别是在新生儿和幼儿中。感染的症状可以从轻微的发热和呼吸系统疾病到严重的败血症样疾病和中枢神经系统感染。2022年,世界各地报告了聚类性PeV感染,促使公共卫生机构发布健康咨询,提醒医生注意传播的PeV会导致儿童中枢神经系统感染。海湾理事会国家中关于PeV感染的报告很少。我们在这里提出的临床表现和结果的PeV中枢神经系统感染在新生儿和年幼的婴儿。
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引用次数: 0
Elimination of Hepatitis B virus transmission in an endemic area in Western Alaska 消除阿拉斯加西部一个流行地区的乙型肝炎病毒传播
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-09-27 DOI: 10.1016/j.ijregi.2025.100774
Brian J McMahon , Janet M Johnston , Lesleigh Kowalski , Mary Snowball , Michael G Bruce , Nathan Furukawa , Karen Miernyk , Lisa Townshend-Bulson

Objectives

In the US, hepatitis B virus (HBV) is only endemic in western Alaska, where 90% of the population are Alaska Native (AN) peoples; in the 1970s, the incidence of hepatocellular carcinoma (HCC) in children was the highest in the world. In the 1980s, we screened 53,860 AN peoples for HBV infection, administered HBV vaccine to 43,618 HBV seronegative persons, and initiated universal newborn vaccination. In this study, we examine the impact of this effort 40 years later.

Methods

This is a population-based outcome study. We used vaccine and electronic health records to examine rates of newborn vaccination between 2015 and 2019 and changes in HBV incidence rates, as well as the prevalence of HCC in persons under 30 years of age over a 50-year period.

Results

Between 2015 and 2019, approximately 90% of newborns received an HBV birth dose, and over 80% received a second HBV vaccine dose by 18 months of age. Annual incidence of new hepatitis B surface antigen-positive tests among AN peoples ranged from 1.4-2.6 per 100,000, down from 6.2 between 1993 and 1997. No hepatitis B surface antigen-positive or HCC cases have been identified in AN peoples under 20 since 1993.

Conclusions

Mass population-based vaccination of seronegative persons, with continuing universal newborn immunization, halted transmission of HBV in western Alaska.
在美国,乙型肝炎病毒(HBV)仅在阿拉斯加西部流行,那里90%的人口是阿拉斯加原住民(AN);20世纪70年代,儿童肝细胞癌(HCC)发病率居世界首位。在20世纪80年代,我们筛查了53860名澳大利亚人的HBV感染,对43618名HBV血清阴性的人接种了HBV疫苗,并开始普及新生儿疫苗接种。在这项研究中,我们考察了40年后这一努力的影响。方法:这是一项基于人群的结果研究。我们使用疫苗和电子健康记录来检查2015年至2019年之间的新生儿疫苗接种率、HBV发病率的变化以及50年间30岁以下人群中HCC的患病率。在2015年至2019年期间,约90%的新生儿接种了HBV出生疫苗,超过80%的新生儿在18个月大时接种了第二剂HBV疫苗。在非洲人民中,新的乙型肝炎表面抗原阳性检测的年发病率从1993年至1997年的每10万人中6.2人下降到1.4-2.6人。自1993年以来,在20岁以下的澳大利亚人群中未发现乙型肝炎表面抗原阳性或HCC病例。结论对血清阴性人群进行大规模疫苗接种,并继续普及新生儿免疫接种,阻止了阿拉斯加西部HBV的传播。
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引用次数: 0
Significance, clinical spectrum, and microbiological evaluation of Actinomyces blood stream infections 放线菌血流感染的意义、临床谱和微生物学评价
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-09-26 DOI: 10.1016/j.ijregi.2025.100769
Maisa Ali , Almurtada Razok , Sreethish Sasi , Sara Al Balushi , Emad B. Ibrahim , Muna Al-Maslamani , Hamad Abdel Hadi

Objectives

Actinomyces species are Gram-positive anaerobic bacilli that are commensal in the gastrointestinal and genital tracts. Actinomyces blood stream infections (BSIs) are rare but becoming more frequent with advanced diagnostic techniques. The presented study aims to evaluate relevance, clinical and microbiological spectrum of Actinomyces species bacteremia.

Methods

A retrospective cohort study was conducted for all reported Actinomyces species BSI between January 2016 to November 2020. Isolates identification and antimicrobial susceptibility tests were performed using matrix-assisted laser desorption/ionization–time of flight (MALDI-TOF) and BD PhoenixTM automated systems.

Results

Overall, 37 episodes of Actinomyces BSIs were recorded, most were Actinomyces odontolyticus (40.5%, 15/37). The mean age of patients was 32 years, with females’ preponderance (23/37, 62.2%). Cultures were considered significant in only 48.6% cases (18/37), in which the primary source of infection was attributed to oropharyngeal origin (40%) with excellent activity for amoxicillin and ceftriaxone but poor susceptibility to aminoglycosides and quinolines. Of those who received antimicrobials (87.5%, 28/32), shorter duration of therapy (<2 weeks) did not result in long-term consequences with 86.5% 1-year survival rate.

Conclusions

Nearly half of the cases were deemed clinically insignificant and responded well to short courses of antimicrobial therapy without long-term consequences. Penicillin and cephalosporins demonstrated superior activity compared to aminoglycosides and quinolones.
目的放线菌属是胃肠道和生殖道共生的革兰氏阳性厌氧杆菌。放线菌血流感染(bsi)是罕见的,但越来越频繁与先进的诊断技术。本研究旨在评估放线菌属菌血症的相关性,临床和微生物谱。方法对2016年1月至2020年11月报告的所有放线菌BSI进行回顾性队列研究。采用基质辅助激光解吸/电离飞行时间(MALDI-TOF)和BD PhoenixTM自动系统对分离物进行鉴定和药敏试验。结果共发现放线菌bsi 37例,其中以溶牙放线菌最多(40.5%,15/37)。患者平均年龄32岁,女性居多(23/37,62.2%)。只有48.6%的病例(18/37)认为培养具有显著意义,其中主要感染源归因于口咽源(40%),对阿莫西林和头孢曲松具有良好的活性,但对氨基糖苷类和喹啉类药物的敏感性较差。在接受抗微生物药物治疗的患者中(87.5%,28/32),较短的治疗时间(2周)没有导致长期后果,1年生存率为86.5%。结论近一半的病例被认为临床无关紧要,对短期抗菌药物治疗反应良好,无长期后果。与氨基糖苷类和喹诺酮类药物相比,青霉素和头孢菌素显示出更好的活性。
{"title":"Significance, clinical spectrum, and microbiological evaluation of Actinomyces blood stream infections","authors":"Maisa Ali ,&nbsp;Almurtada Razok ,&nbsp;Sreethish Sasi ,&nbsp;Sara Al Balushi ,&nbsp;Emad B. Ibrahim ,&nbsp;Muna Al-Maslamani ,&nbsp;Hamad Abdel Hadi","doi":"10.1016/j.ijregi.2025.100769","DOIUrl":"10.1016/j.ijregi.2025.100769","url":null,"abstract":"<div><h3>Objectives</h3><div>Actinomyces species are Gram-positive anaerobic bacilli that are commensal in the gastrointestinal and genital tracts. Actinomyces blood stream infections (BSIs) are rare but becoming more frequent with advanced diagnostic techniques. The presented study aims to evaluate relevance, clinical and microbiological spectrum of Actinomyces species bacteremia.</div></div><div><h3>Methods</h3><div>A retrospective cohort study was conducted for all reported Actinomyces species BSI between January 2016 to November 2020. Isolates identification and antimicrobial susceptibility tests were performed using matrix-assisted laser desorption/ionization–time of flight (MALDI-TOF) and BD PhoenixTM automated systems.</div></div><div><h3>Results</h3><div>Overall, 37 episodes of Actinomyces BSIs were recorded, most were <em>Actinomyces odontolyticus</em> (40.5%, 15/37). The mean age of patients was 32 years, with females’ preponderance (23/37, 62.2%). Cultures were considered significant in only 48.6% cases (18/37), in which the primary source of infection was attributed to oropharyngeal origin (40%) with excellent activity for amoxicillin and ceftriaxone but poor susceptibility to aminoglycosides and quinolines. Of those who received antimicrobials (87.5%, 28/32), shorter duration of therapy (&lt;2 weeks) did not result in long-term consequences with 86.5% 1-year survival rate.</div></div><div><h3>Conclusions</h3><div>Nearly half of the cases were deemed clinically insignificant and responded well to short courses of antimicrobial therapy without long-term consequences. Penicillin and cephalosporins demonstrated superior activity compared to aminoglycosides and quinolones.</div></div>","PeriodicalId":73335,"journal":{"name":"IJID regions","volume":"17 ","pages":"Article 100769"},"PeriodicalIF":1.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effectiveness of an e-Bug–based antimicrobial resistance education intervention: A prospective quasi-experimental study among Grade 12 students in Mogadishu, Somalia 基于电子细菌的抗菌素耐药性教育干预的有效性:索马里摩加迪沙12年级学生的前瞻性准实验研究
IF 1.7 Q4 INFECTIOUS DISEASES Pub Date : 2025-09-25 DOI: 10.1016/j.ijregi.2025.100771
Shafie Abdulkadir Hassan , Maryan Jamal Isak , Abdullahi Mohamed Osman , Yonis Mohamud Hassan , Ahmed Mohamed Ahmed , Sara Ali Mire , Kassim Abdi Jimale , Abdifetah Ibrahim Omar , Nur Rashid Ahmed

Objectives

Antimicrobial resistance (AMR) is a severe global health threat, with a disproportionate impact on low-income countries like Somalia. This study aimed to evaluate the effectiveness of the e-Bug educational module in improving knowledge and understanding of AMR among secondary school students in Mogadishu, Somalia, a setting with limited public awareness and a high burden of infectious diseases.

Methods

A prospective quasi-experimental pre-post study was conducted among 384 Form four (Grade 12) students in Mogadishu. A structured questionnaire assessed knowledge of microbiology, hygiene, and AMR before and after the implementation of the e-Bug educational module. The intervention consisted of standardized, interactive lessons on AMR, hygiene, and infection prevention. Changes in knowledge were analyzed using descriptive statistics, and the McNemar-Bowker test was used to determine the statistical significance of the change in responses from pre-test to post-test.

Results

Participants were predominantly male (54.2%), with most aged 16-18 years (51.6%). Baseline data revealed strong knowledge of general hygiene, such as handwashing (93.5%), but notable misunderstandings regarding AMR. Notably, 61.5% of students incorrectly believed antibiotics are effective against viral infections like influenza. Following the e-Bug intervention, a statistically significant improvement in overall AMR knowledge was observed (P = 0.003). Post-test results showed enhanced understanding of key AMR concepts, including a 9.6% increase (from 84.4% to 94.0%) in the awareness that antibiotic misuse drives resistance. However, the misconception that antibiotics treat viral infections remained prevalent (58.3%).

Conclusions

The e-Bug educational module is an effective tool for improving AMR knowledge among secondary school students in Mogadishu. However, the persistence of critical misconceptions, particularly regarding the use of antibiotics for viral illnesses, highlights the need for sustained and reinforced educational efforts. Integrating the e-Bug module into the national curriculum and developing targeted public health campaigns are recommended to address these deep-seated misunderstandings and combat the growing threat of AMR in Somalia.
抗微生物药物耐药性(AMR)是一个严重的全球健康威胁,对索马里等低收入国家的影响尤为严重。本研究旨在评估e-Bug教育模块在提高索马里摩加迪沙中学生对抗菌素耐药性的认识和理解方面的有效性。索马里摩加迪沙的公众认识有限,传染病负担沉重。方法对摩加迪沙384名中四(12年级)学生进行前瞻性准实验前后研究。一份结构化问卷评估了在实施电子细菌教育模块之前和之后的微生物学、卫生和抗生素耐药性知识。干预措施包括标准化、互动式的抗微生物药物耐药性、卫生和感染预防课程。使用描述性统计分析知识变化,并使用McNemar-Bowker检验确定测试前到测试后反应变化的统计显著性。结果参与者以男性为主(54.2%),年龄以16 ~ 18岁为主(51.6%)。基线数据显示,对一般卫生知识(如洗手)有较强的了解(93.5%),但对抗菌素耐药性有明显的误解。值得注意的是,61.5%的学生错误地认为抗生素对流感等病毒感染有效。在e-Bug干预后,观察到总体AMR知识的统计学显著改善(P = 0.003)。测试后结果显示,对抗生素耐药性关键概念的理解有所提高,包括对抗生素滥用导致耐药性的认识提高了9.6%(从84.4%提高到94.0%)。然而,认为抗生素治疗病毒感染的误解仍然普遍存在(58.3%)。结论e-Bug教育模块是提高摩加迪沙中学生抗菌素耐药性知识的有效工具。然而,持续存在的严重误解,特别是关于使用抗生素治疗病毒性疾病的误解,突出表明需要持续和加强教育工作。建议将电子细菌模块纳入国家课程,并开展有针对性的公共卫生运动,以解决这些根深蒂固的误解,并与索马里日益严重的抗微生物药物耐药性威胁作斗争。
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