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Burden of antimicrobial resistance and estimated economic impact of Klebsiella pneumoniae in Iran— A 2000 to 2021 analysis 伊朗肺炎克雷伯菌抗微生物药物耐药性负担和估计经济影响——2000年至2021年分析
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101675
Amirhossein Shahsavand , Ali Golestani , Samaneh Akbarpour , Mohammadreza Salehi , Arash Seifi , Keyhan Mohammadi , Maryam Shafaati

Background

Antimicrobial resistance (AMR) in Klebsiella pneumoniae (K. pneumoniae) poses a growing public health threat in Iran. This study assessed the burden of K. pneumoniae AMR from 2000 to 2021, including deaths, disability-adjusted life years (DALYs), and economic impact.

Methods

Using 2021 AMR project data, we estimated deaths and DALYs per 100,000 population with 95 % uncertainty intervals under two scenarios: attributable (resistant replaced by susceptible infections) and associated (resistant replaced by no infection). Economic burden was calculated using GDP per capita and PPP-adjusted estimates.

Results

The deaths from K. pneumoniae AMR increased from 565.9 to 643.5, while the age-standardized rate of deaths decreased from 1.5 to 0.9 per 100,000 people. DALYs dropped from 29523.4 to 18787.1, with the ASR decreasing from 60.2 to 25.3 per 100,000 people. Carbapenem resistance rose from 7.5 % to 20 %, increasing all-age attributable deaths from 76.1 to 175.0. Deaths and death rates fell for under-20s. For those 30 and over, death counts rose while the rate itself fell, stabilizing only for ages 85+. Despite a slight decrease, the economic burden was estimated at between 291.1 and 873.31 million USD PPP in 2021.

Conclusions

While the overall burden of K. pneumoniae AMR has declined, it remains high in older adults. Strengthening water, sanitation, and hygiene (WASH) programs, antibiotic stewardship (ASP), and prescribing practices are essential.
背景肺炎克雷伯菌(肺炎克雷伯菌)的抗生素耐药性(AMR)在伊朗构成了日益严重的公共卫生威胁。本研究评估了2000年至2021年肺炎克雷伯菌抗菌素耐药性的负担,包括死亡、残疾调整生命年(DALYs)和经济影响。方法使用2021年AMR项目数据,我们在两种情况下以95%的不确定性区间估计了每10万人的死亡和DALYs:归属(耐药被易感感染取代)和相关(耐药被无感染取代)。经济负担采用人均国内生产总值和经购买力平价调整后的估计值计算。结果肺炎克雷伯菌AMR致死率由565.9‰上升至643.5‰,年龄标准化死亡率由1.5‰下降至0.9‰。DALYs由29523.4降至18787.1,ASR由60.2 / 10万人降至25.3 / 10万人。碳青霉烯耐药性从7.5%上升到20%,使所有年龄段的死亡人数从76.1增加到175.0。20岁以下儿童的死亡率和死亡率下降。对于30岁及以上的人来说,死亡人数上升,而死亡率本身则下降,只有85岁以上的人才稳定下来。尽管略有下降,但2021年的经济负担估计在2.911亿至8.731亿美元之间。结论虽然肺炎克雷伯菌AMR的总体负担已经下降,但在老年人中仍然很高。加强水、环境卫生和个人卫生(WASH)规划、抗生素管理(ASP)和处方实践至关重要。
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引用次数: 0
Urethritis caused by nongroupable Neisseria meningitidis ST-11 and ST-11026 in China 中国非分群脑膜炎奈瑟菌ST-11和ST-11026所致尿道炎
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101671
Rui Jin , Xiaoyu Zhu , Yanhong Zhao , Biyu Yin , Shaochun Chen
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引用次数: 0
Ivermectin's role in malaria control: the simplicity and the complexity 伊维菌素在疟疾控制中的作用:简单性和复杂性
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101681
Eli Schwartz , Laor Orshan , Patricia Schlagenhauf
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引用次数: 0
Ethiopia's first Marburg virus outbreak — Implications for emerging hemorrhagic fevers in Africa 埃塞俄比亚首次马尔堡病毒爆发-对非洲新发出血热的影响
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101677
Jaffar A. Al-Tawfiq
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引用次数: 0
Genomic landscape of Mycobacterium tuberculosis: Identifying mutation hotspots and stable regions for implications for drug development 结核分枝杆菌的基因组景观:确定突变热点和稳定区域对药物开发的影响
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101674
Muhammad Tahir Khan , Zeyu Luo , Arwa Omar Al Khatib , Dalal Sulaiman Alshaya , Ahmed A. Al-Qahtani , Tariq Nadeem
Whole-genome sequencing is the most promising approach for public health surveillance and antimicrobial drug resistance. The current study aimed to analyze base mutations across Mycobacterium tuberculosis genomes to assess mutation frequency and distribution across different regions. This study aimed to identify genomic regions of Mycobacterium tuberculosis with varying mutation frequencies to inform mechanisms of drug resistance and potential drug target discovery. The study analyzed base mutations across 209 whole genome sequences, which were aligned with reference H37Rv (NC_000962.3), using the PhyResSE pipeline. Based on the frequency of mutations, the regions have been classified into three main locations. High frequency mutation areas: around 2300 kb to 2400 kb, around 4100 kb to 4200 kb, around 1600 kb to 1700 kb, and 3700 kb to 3800 kb. These locations showed dense clusters linked to katG and inhA (Isoniazid resistance), Ethambutol resistance (embB), rifampicin resistance (compensatory role rpoA). Moderate frequency mutations were observed around 2000 kb to 2100 kb, around 1300 kb to 1400 kb, around 3800 kb to 3900 kb, and around 3400 kb to 3500 kb. These regions show mostly involved rrs mutations (amikacin, kanamycin, and capreomycin resistance), and rpoA has a compensatory role in rifampicin resistance. Regions exhibiting minimal mutation activity have been observed around 100 kb–300 kb, around 500 kb, and 2700 kb to 2800 kb. The most common nucleotide substitution was G to A (G→A) (16 %), followed by A to G (A→G) and T to C (T→C) (15 %). These findings collectively highlight novel genomic regions of stability and hypervariability, offering insights for refining WGS-based surveillance, resistance prediction, and future drug target prioritization.
全基因组测序是公共卫生监测和抗微生物药物耐药性最有前途的方法。目前的研究旨在分析结核分枝杆菌基因组中的碱基突变,以评估不同地区的突变频率和分布。本研究旨在鉴定具有不同突变频率的结核分枝杆菌基因组区域,为耐药机制和潜在药物靶点的发现提供信息。该研究使用PhyResSE管道分析了209个全基因组序列的碱基突变,这些序列与参考H37Rv (NC_000962.3)一致。根据突变的频率,这些区域被分为三个主要位置。高频突变区:2300 ~ 2400 kb左右,4100 ~ 4200 kb左右,1600 ~ 1700 kb左右,3700 ~ 3800 kb左右。这些位点与katG和inhA(异烟肼耐药)、乙胺丁醇耐药(embB)、利福平耐药(代偿作用rpoA)相关。在2000 ~ 2100 kb、1300 ~ 1400 kb、3800 ~ 3900 kb和3400 ~ 3500kb之间观察到中等频率的突变。这些区域主要涉及rrs突变(阿米卡星、卡那霉素和卷曲霉素耐药),rpoA在利福平耐药中具有代偿作用。在100kb - 300kb、500kb和2700kb - 2800kb左右的区域观察到突变活性最小。最常见的核苷酸置换是G到A (G→A)(16%),其次是A到G (A→G)和T到C (T→C)(15%)。这些发现共同强调了稳定和高变异性的新基因组区域,为改进基于wgs的监测、耐药性预测和未来药物靶点优先排序提供了见解。
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引用次数: 0
Insights into antibiotic resistance and prevalence of Stenotrophomonas maltophilia isolated from clinical samples in Iran: A systematic review 从伊朗临床样本中分离出的嗜麦芽寡养单胞菌的抗生素耐药性和流行情况:一项系统综述
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101664
Fatemeh Sameni , Ali Dadashi , Bahareh Hajikhani , Maedeh Pourali Eshkalak , Alex van Belkum , Ali Hashemi , Azadeh Alirezaei , Masoud Dadashi

Background

Infections caused by Stenotrophomonas maltophilia (S. maltophilia) are particularly difficult to treat because of their intrinsic resistance to multiple antibiotics.

Objective

The main aim of this systematic review was to evaluate the prevalence of infections caused by this bacterium across different provinces of Iran. Additionally, the study assessed the resistance rates of commonly prescribed antibiotics to address existing gaps in therapeutic knowledge.

Methods

A systematic literature review was conducted to identify relevant original research articles published in English between 2000 and 2024, using Google Scholar, Medline (via PubMed), Embase, and Web of Science. Following screening, all studies reporting antibiotic resistance in clinical isolates of S. maltophilia from Iran were included and analyzed.

Results

A total of 1415 clinical isolates were collected from 16 regions across Iran. Most isolates showed high susceptibility to ticarcillin/clavulanic acid and minocycline (98.5 % and 98.2 %, respectively). Among the genes associated with biofilm formation and antibiotic resistance, sul1 and spgM were the most prevalent (12.4 % and 39.6 %, respectively).

Conclusion

Given the low resistance rates to levofloxacin and minocycline, these antibiotics may be considered as potentially effective options for treating S. maltophilia infections in Iran. Trimethoprim-sulfamethoxazole showed comparatively higher resistance rates, suggesting that its clinical efficacy may be declining. The rising isolation of S. maltophilia from clinical specimens in recent years, compared to the previous decade, is of both epidemiological and clinical concern, highlighting the need for ongoing surveillance and prudent antibiotic use.
嗜麦芽窄养单胞菌(S. maltopophilia)引起的感染尤其难以治疗,因为它们对多种抗生素具有内在耐药性。目的本系统综述的主要目的是评估伊朗不同省份由该细菌引起的感染的流行情况。此外,该研究评估了常用抗生素的耐药率,以解决治疗知识方面的现有空白。方法利用谷歌Scholar、Medline(通过PubMed)、Embase和Web of Science,对2000 - 2024年间发表的相关英文原创研究文章进行系统的文献综述。筛选后,纳入并分析了所有报道伊朗嗜麦芽葡萄球菌临床分离株抗生素耐药性的研究。结果在伊朗16个地区共采集到临床分离株1415株。大多数菌株对替卡西林/克拉维酸和米诺环素的敏感性分别为98.5%和98.2%。在与生物膜形成和抗生素耐药性相关的基因中,sul1和spgM最为普遍(分别占12.4%和39.6%)。结论考虑到左氧氟沙星和米诺环素的低耐药率,这些抗生素可能被认为是治疗伊朗嗜麦芽葡萄球菌感染的潜在有效选择。甲氧苄啶-磺胺甲恶唑耐药率较高,提示其临床疗效可能正在下降。与过去十年相比,近年来从临床标本中分离出嗜麦芽链球菌的情况越来越多,这是流行病学和临床关注的问题,突出了持续监测和谨慎使用抗生素的必要性。
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引用次数: 0
Species distribution, antifungal susceptibility, and clinical profiles of patients with osteoarticular fungal Infections: A retrospective study 骨关节真菌感染患者的种类分布、抗真菌敏感性和临床特征:一项回顾性研究
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101676
Jie Liu , Kaiming Zhang , Rui Yu , Haozhi Han , Peng Zhao
<div><h3>Background</h3><div>Osteoarticular fungal infections (OAFIs), including fungal osteomyelitis and septic arthritis, represent uncommon but clinically significant complications in musculoskeletal care. Current management remains challenging due to limited evidence guiding antifungal selection. This study aims to characterize the epidemiological patterns, clinical features, and antifungal susceptibility profiles of OAFIs, with particular focus on the critical role of <em>in vitro</em> susceptibility testing in determining treatment outcomes.</div></div><div><h3>Methods</h3><div>A retrospective study of patients was conducted with OAFIs treated between January 2020 and February 2024, analyzing clinical manifestations, surgical interventions, and associated risk factors. Fungal identification was performed using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), followed by broth microdilution antifungal susceptibility testing for amphotericin B (AMB), fluconazole (FLC), voriconazole (VRC), and posaconazole (POS). Minimum inhibitory concentration (MIC) values were interpreted according to CLSI guidelines to determine susceptibility profiles and identify potential resistance mechanisms.</div></div><div><h3>Results</h3><div>Sixty fungal isolates were isolated from 60 patients with OAFIs including <em>Candida</em> spp. (n = 40, 66.7 %), <em>Aspergillus</em> spp. (n = 14, 23.3 %), <em>Cryptococcus neoformans</em> (n = 2, 3.3 %), <em>Trichophyton rubrum</em> (n = 2, 3.3 %), <em>Lomentospora prolificans</em> (n = 1, 1.7 %), and <em>Cryptococcus laurentii</em> (n = 1, 1.7 %). The isolates were obtained from joint fluid (n = 48, 80 %) and inflammatory lesions (n = 12, 20 %). Antifungal susceptibility testing demonstrated highest MIC values for FLC but susceptibility profiles for VRC and POS against all fungal isolates. Statistical analysis revealed significant differences in VRC and POS activity among <em>Candida</em>, <em>Aspergillus</em>, and <em>Cryptococcus</em> spp. (F = 15.78, <em>P</em> < 0.01; F = 66.88, <em>P</em> < 0.0001). VRC activity did not differ between <em>Candida</em> and <em>Aspergillus</em> spp., but both were lower than against <em>Cryptococcus</em> spp. (<em>P</em> < 0.05 and <em>P</em> < 0.05). POS activity was higher against <em>Candida</em> than <em>Aspergillus</em> (<em>P</em> < 0.001) and <em>Cryptococcus</em> spp. (<em>P</em> < 0.0001), and higher against <em>Cryptococcus</em> than <em>Aspergillus</em> (<em>P</em> < 0.05). Systemic comorbidities were common (73.3 %), one patient was HIV-positive, and three had only localized superficial fungal infections.</div></div><div><h3>Conclusion</h3><div>We concluded that <em>Candida albicans</em> and <em>Aspergillus fumigatus</em> as the predominant pathogens in OAFIs, while rare species including <em>Cryptococcus neoformans</em>, <em>Lomentospora prolificans</em>, and <em>Cryptococcus laurentii</em> were also isolated
骨关节真菌感染(OAFIs),包括真菌性骨髓炎和脓毒性关节炎,是肌肉骨骼护理中不常见但临床上重要的并发症。目前的管理仍然具有挑战性,因为指导抗真菌选择的证据有限。本研究旨在描述OAFIs的流行病学模式、临床特征和抗真菌药敏特征,特别关注体外药敏试验在确定治疗结果中的关键作用。方法回顾性分析2020年1月至2024年2月期间接受OAFIs治疗的患者的临床表现、手术干预及相关危险因素。采用基质辅助激光解吸/电离飞行时间质谱法(MALDI-TOF MS)进行真菌鉴定,随后进行肉汤微量稀释对两性霉素B (AMB)、氟康唑(FLC)、伏立康唑(VRC)和泊沙康唑(POS)的抗真菌药敏试验。根据CLSI指南解释最低抑制浓度(MIC)值,以确定敏感性概况并确定潜在的耐药机制。结果从60例OAFIs患者中分离到真菌60株,其中念珠菌40株(66.7%)、曲霉菌14株(23.3%)、新型隐球菌2株(3.3%)、红毛癣菌2株(3.3%)、增殖性卷孢菌1株(1.7%)、劳伦隐球菌1株(1.7%)。分离株分别来自关节液(n = 48, 80%)和炎性病变(n = 12, 20%)。抗真菌药敏试验表明,FLC的MIC值最高,但VRC和POS对所有真菌分离株的药敏曲线最高。统计分析显示,假丝酵母菌、曲霉菌和隐球菌的VRC和POS活性差异有统计学意义(F = 15.78, P < 0.01; F = 66.88, P < 0.0001)。VRC活性在假丝酵母菌和曲霉菌间无显著差异,但均低于隐球菌(P <; 0.05和P <; 0.05)。POS对假丝酵母菌的活性高于曲霉菌(P < 0.001)和隐球菌(P < 0.0001),对隐球菌的活性高于曲霉菌(P < 0.05)。全身合并症很常见(73.3%),1例hiv阳性,3例仅局部浅表真菌感染。结论OAFI的主要病原菌为白色念珠菌和烟曲霉,同时也检出了新型隐球菌、增殖性绵孢子菌和劳伦隐球菌等稀有病原菌。抗真菌药敏试验显示VRC和POS是OAFIs潜在有效的治疗选择。这些发现强调了早期发现罕见真菌病原体、敏感性指导治疗和持续耐药性监测对非免疫缺陷患者OAFIs治疗的必要性。
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引用次数: 0
TEM-15 and TEM-17, rare ESBLs re-emerging in a KPC-2-producing Klebsiella quasipneumoniae subsp. similipneumoniae ST2131 from wastewater, Brazil 在产kpc -2的准肺炎克雷伯菌亚种中重新出现的罕见ESBLs -15和TEM-17。来自巴西废水的类似肺炎ST2131
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101673
João Pedro Rueda Furlan , Giovanna Carrasco Bueno , Rubens Renato Sousa-Carmo , Renan Lourenço Oliveira Silva , Mikaela Renata Funada Barbosa , Maria Ines Zanoli Sato , Nilton Lincopan , Sergio Schenkman
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引用次数: 0
Current status of H5N1 influenza vaccines against clade 2.3.4.4b of H5N1 针对H5N1进化支2.3.4.4b的H5N1流感疫苗的现状
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101637
Chiranjib Chakraborty , Manojit Bhattacharya , Arpita Das , Rao Zahid Abbas , Priyanka Choudhary , Om Prakash Choudhary
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引用次数: 0
Ethiopia's first-ever Marburg virus disease outbreak: Implications for health security in Jordan in the context of labor migration 埃塞俄比亚首次马尔堡病毒病暴发:劳工移徙背景下对约旦卫生安全的影响
IF 5.4 Q2 INFECTIOUS DISEASES Pub Date : 2025-12-01 DOI: 10.1016/j.nmni.2025.101678
Ala'a B. Al-Tammemi , Tareq L. Mukattash
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引用次数: 0
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