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Community knowledge, attitudes, and practices regarding the use of plants for mosquito control: The case of Arjo Gudatu District, East Wollega Zone, Oromia Regional State, Ethiopia 关于使用植物控制蚊子的社区知识、态度和做法:埃塞俄比亚奥罗米亚州东沃勒加区Arjo Gudatu县的案例
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-11-01 DOI: 10.1016/j.parepi.2025.e00463
Lensa Tesfaye, Esayas Aklilu, Ketema Tolossa, Abebe Animut

Background

Mosquitoes are the species that transmit malaria and various viral diseases to humans. The main mosquito control strategies, particularly indoor spraying with insecticides and long-lasting insecticide-treated nets, have proven to reduce the incidence and spread of malaria. However, their effectiveness is threatened by the emergence and spread of insecticide-resistant vectors. Indigenous plants offer a safe, effective, and locally accessible solution to address the rising threat of mosquito-borne diseases.

Objective

To assess the knowledge, attitudes, and practices of the inhabitants of Arjo Gudatu District, Ethiopia, regarding the use of plants to control mosquitoes.

Materials and methods

A descriptive cross-sectional study was conducted among the inhabitants of Mada Jalala, Karsa Dako, and Lalisa Dimtu kebeles (the lowest administrative level) in the Arjo Gudatu district, Oromia Regional State, Ethiopia. Randomly selected households were interviewed using a questionnaire developed for this study. The data were collected through door-to-door interviews, checked for completeness and consistency, entered into SPSS version 25, cleaned, and analyzed.

Results

Of the 398 household representatives interviewed, 63.5 % (253 individuals) reported knowing the use of plants for mosquito control. Of these, about 75 % (190 out of 253) plants were for this purpose, and 79 % (200 out of 253) expressed a positive attitude to using plants to control mosquitoes. The most frequently mentioned plant was Securidaca Longpedunculata (31 respondents, 12 %), followed by Echinops Sphaocephalus L. (28 respondents, 11 %) and Agave Sisalana Perrine Ex Engelm. (21 respondents, 8.3 %). These plants were cited for their roles as repellents, adulticides, and larvicides.

Conclusion

Agave sisalana Perrine ex Engeln, Securidaca longepedunculate, and Echinops sphaerocephalus L. were the plants most commonly used to control mosquitoes. The plants were used in traditional mosquito control as adulticides, larvicides, and repellents.
蚊子是传播疟疾和各种病毒性疾病给人类的物种。主要的蚊虫控制战略,特别是室内喷洒杀虫剂和长效驱虫蚊帐,已被证明可减少疟疾的发病率和传播。然而,它们的有效性受到耐药病媒的出现和传播的威胁。本土植物为应对日益严重的蚊媒疾病威胁提供了一种安全、有效和当地可获得的解决方案。目的了解埃塞俄比亚Arjo Gudatu地区居民对植物防蚊的认识、态度和做法。资料和方法在埃塞俄比亚奥罗米亚州Arjo Gudatu地区Mada Jalala、Karsa Dako和Lalisa Dimtu kebeles(最低行政级别)的居民中进行了一项描述性横断面研究。使用为本研究开发的问卷对随机选择的家庭进行访谈。通过上门访谈的方式收集数据,检查数据的完整性和一致性,并输入SPSS版本25进行清理和分析。结果在398名受访家庭代表中,63.5%(253人)报告知道使用植物灭蚊。其中,约75%(253株中190株)的植物具有上述作用,79%(253株中200株)的植物对植物灭蚊持积极态度。被提及最多的植物是长柄草(31人,12%),其次是棘头草(28人,11%)和龙舌兰(Agave Sisalana)。(21人,8.3%)。这些植物因其驱虫、杀虫和杀幼虫的作用而被引用。结论龙舌兰(agave sisalana Perrine ex Engeln)、长柄棘猴(Securidaca longedunculate)和球头棘猴(Echinops sphaerocephalus L.)是最常用的防蚊植物。这些植物作为杀成虫剂、杀幼虫剂和驱蚊剂用于传统的蚊虫防治。
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引用次数: 0
Visceral leishmaniasis outbreak investigation and risk factors among communities in South Omo Zone, Southern Ethiopia, 2022–2023 2022-2023年埃塞俄比亚南部南奥莫区社区内脏利什曼病暴发调查及危险因素
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-11-01 DOI: 10.1016/j.parepi.2025.e00466
Tadele Shiwito Ango , Daniel Dansa Dana , Sefonias Getachew , Wakgari Deressa

Background

Visceral leishmaniasis (VL), also known as kala-azar, remains a major public health problem in Ethiopia, caused mainly by Leishmania donovani and transmitted through infected female Phlebotomine sandflies. The disease disproportionately affects impoverished, rural populations. Understanding the epidemiology and risk factors of outbreaks is vital for timely prevention and control.

Objective

This study was aimed to investigate a VL outbreak and associated risk factors among communities in South Omo Zone, Southern Ethiopia, 2022–2023.

Methods

A descriptive cross-sectional study followed by an unmatched case–control study (1:2 ratio) was conducted from June 2022 to January 2023. Forty-five laboratory-confirmed VL cases and ninety controls without previous VL history were included. Data on socio-demographic, environmental, and behavioral factors were collected using structured interviews. Logistic regression analysis was performed to identify independent risk factors, and the strength of association was expressed using adjusted odds ratios (AORs) with 95 % confidence intervals (CI). Statistical significance was set at p < 0.05.

Results

A total of 45 VL cases and 3 deaths were recorded, yielding an attack rate of 9.7 per 100,000 population and a case fatality rate of 7 %. The highest attack rate occurred in Salamago District (51.6/100,000), followed by Nyangatom (19.5/100,000). Adults were the most affected group (87 % of cases). The epidemic curve suggested a propagated outbreak peaking in week 24 of 2022. Independent predictors of VL infection included never using long-lasting insecticidal nets (LLINs) (AOR = 7.97; 95 % CI: 1.63–39.04), inconsistent LLIN use (AOR = 5.33; 95 % CI: 1.59–17.83), sleeping under acacia trees (AOR = 5.13; 95 % CI: 1.26–20.78), and living in houses with wooden walls (AOR = 6.62; 95 % CI: 2.07–21.25).

Conclusions

The outbreak was concentrated in the Salamago District, predominantly affecting adult males. Inconsistent use of LLINs, outdoor sleeping under acacia trees, and poor housing conditions significantly increased VL risk. Strengthening vector control programs, promoting consistent LLIN utilization, improving housing quality, and enhancing community awareness are essential to prevent future VL outbreaks in pastoral settings.
内脏利什曼病(VL),也称为黑热病,仍然是埃塞俄比亚的一个主要公共卫生问题,主要由多诺瓦利什曼原虫引起,并通过受感染的雌性白蛉传播。这种疾病对贫困的农村人口的影响尤为严重。了解疫情的流行病学和危险因素对于及时预防和控制至关重要。目的本研究旨在调查2022-2023年埃塞俄比亚南部南奥莫区社区暴发的VL疫情及其相关危险因素。方法于2022年6月至2023年1月进行了一项描述性横断面研究,随后进行了一项无与伦比的病例对照研究(1:2)。包括45例实验室确诊的VL病例和90例无VL病史的对照。采用结构化访谈收集社会人口、环境和行为因素的数据。进行Logistic回归分析以确定独立危险因素,并使用校正优势比(AORs)表示关联强度,95%置信区间(CI)。p <; 0.05为统计学意义。结果共发现VL病例45例,死亡3例,发病率为9.7 / 10万人,病死率为7%。攻击率最高的是萨拉马戈县(51.6/10万),其次是尼扬atom县(19.5/10万)。成年人是受影响最大的群体(87%的病例)。疫情曲线显示,传播性疫情在2022年第24周达到峰值。VL感染的独立预测因子包括从未使用长效杀虫蚊帐(AOR = 7.97; 95% CI: 1.63-39.04)、不一致使用长效杀虫蚊帐(AOR = 5.33; 95% CI: 1.59-17.83)、在金合树下睡觉(AOR = 5.13; 95% CI: 1.26-20.78)、居住在木墙房屋(AOR = 6.62; 95% CI: 2.07-21.25)。结论疫情集中在萨拉马戈区,以成年男性为主。不一致地使用llin,在金合欢树下户外睡觉,以及恶劣的住房条件显著增加了VL风险。加强病媒控制规划、促进持续利用LLIN、改善住房质量和提高社区意识,对于预防今后在牧区爆发VL至关重要。
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引用次数: 0
Spatio-temporal dynamics of malaria incidence in children under five years of age and correlation with meteorological variability in the North and Far North regions of Cameroon between 2015-2022 2015-2022年喀麦隆北部和远北部地区5岁以下儿童疟疾发病率时空动态及其与气象变率的相关性
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-11-01 DOI: 10.1016/j.parepi.2025.e00464
Abas Mouliom , Fredline Ilorme , Joël Marcelin Ateba , Germaine Ekoyol , Jean Fotso , Jean Pierre Kidwang , Janvier Tchopwe , Sali Djele , Joel olivier Dzika , Estelle Essangui Same , Lawrence Ayong , Innocent Mbulli Ali , Else Carole Eboumbou Moukoko
Changes in environmental temperature, humidity, and rainfall can affect the survival and behavior of the mosquito vector of malaria parasites, thereby influencing malaria incidence rates. We investigated the spatiotemporal dynamics of malaria incidence in two geo-epidemiological transmission zones (North and Far North regions) of Cameroon and assessed its correlation with various meteorological factors. Malaria and meteorological data were obtained from the local health information system and by remote sensing, respectively. Malaria risk was stratified according to spatial heterogeneity of incidence. The strength of the association between malaria incidence and meteorological variables was measured using distributed lag nonlinear models (DLNM). A generalized additive quasi-Poisson regression model was used to account for over-dispersion in the number of cases. The values observed during the non-epidemic season were used as exposure reference values for the effects predicted by the DLNM.
Between 2015 and 2022, the maximum recorded incidence was 190.6 (189.5–191.8) per 1000 person-years for the North region and 243.8 (242.9–244.7) for the Far North region. Stratification of health districts by malaria risk showed that most health districts are located in areas of very low to low transmission. From more than one millimeter rainfall per day (1 mm/day) on average, the risk of malaria transmission was 1.2 times higher (RR = 1.2, 95 % CI: 1.1–1.2) in the North region and 1.4 times higher (RR = 1.4, 95 % CI: 1.3–1.5) in the Far North region and increased with rainfall intensity. Humidity at 70 % increased the risk of transmission 2 times higher (RR = 2, 95 % CI: 1.4–2.8) in the North region and 3.7 times higher (RR = 3.7, 95 % CI: 2–4.6) in the Far North region. Collectively, the data reveal significant year-to-year variations in malaria incidences in the North and Far North regions of Cameroon, and a strong association with meteorological factors such as humidity and rainfall.
环境温度、湿度和降雨量的变化可影响疟疾寄生虫蚊媒的生存和行为,从而影响疟疾发病率。研究了喀麦隆两个地理流行病学传播区(北部和远北部地区)疟疾发病率的时空动态,并评估了其与各种气象因素的相关性。疟疾和气象数据分别从当地卫生信息系统和通过遥感获得。根据发病率的空间异质性对疟疾风险进行分层。使用分布滞后非线性模型(DLNM)测量了疟疾发病率与气象变量之间的关联强度。采用广义加性准泊松回归模型来解释病例数的过度分散。将非流行季节的观测值作为DLNM预测影响的暴露参考值。2015年至2022年期间,北方地区的最高记录发病率为每1000人年190.6例(189.5-191.8例),远北地区为243.8例(242.9-244.7例)。按疟疾风险对卫生区进行分层表明,大多数卫生区位于传播极低至极低的地区。从平均每天1毫米以上的降雨量(1毫米/天)来看,北部地区的疟疾传播风险高出1.2倍(RR = 1.2, 95% CI: 1.1-1.2),远北部地区的疟疾传播风险高出1.4倍(RR = 1.4, 95% CI: 1.3-1.5),并且随着降雨强度的增加而增加。湿度在70%时,北部地区的传播风险增加2倍(RR = 2, 95% CI: 1.4-2.8),远北部地区的传播风险增加3.7倍(RR = 3.7, 95% CI: 2 - 4.6)。总的来说,这些数据揭示了喀麦隆北部和远北部地区疟疾发病率的逐年显著变化,并与湿度和降雨等气象因素密切相关。
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引用次数: 0
Diversity and prevalence of gastrointestinal parasites in small ruminants in Franceville, Gabon 加蓬弗朗斯维尔小反刍动物胃肠道寄生虫的多样性和流行率
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-11-01 DOI: 10.1016/j.parepi.2025.e00465
Krista Mapagha-Boundoukou , Larson Boundenga , Mohamed H. Mohamed-Djawad , Neil M. Longo-Pendy , Patrice Makouloutou-Nzassi , Mourad Ben Said , Gael Darren Maganga
Gastrointestinal parasites represent a major constraint on the health and productivity of small ruminants worldwide. In Gabon, and particularly in Franceville, data regarding parasite diversity, prevalence, and associated risk factors remain scarce. Understanding these aspects is crucial to develop effective, targeted control strategies and to safeguard animal health and food security. A cross-sectional study was conducted from August to October 2019, covering both dry and rainy seasons in Franceville, southeastern Gabon. A total of 120 fecal samples (113 sheep and 7 goats) were collected from twelve farms representing semi-intensive and extensive husbandry systems. Samples were analyzed using flotation and sedimentation coprological techniques to identify and quantify parasite eggs and oocysts. Host and environmental data, including age, sex, physiological status, farming system, and season, were recorded. Statistical analysis included prevalence estimation, Chi-square tests for association, and linear regression models with model selection based on Akaike's Information Criterion. The overall gastrointestinal parasite prevalence of 91.7 % was observed, consistent with regional African data. Ten parasite genera were identified, encompassing nematodes, cestodes, and protozoa. The most prevalent were Oesophagostomum/Haemonchus complex (64.6 %), Eimeria spp. (53.3 %), Strongyloides spp. (42.5 %), and Trichostrongylus spp. (38.0 %). Nematodes exhibited the highest mean infection intensity (∼1577 eggs per gram), followed by protozoa and cestodes. Risk factor analysis revealed that juveniles had higher prevalence of infestation, but lower parasite loads than adults, males carried higher burdens than females, and pregnant females had significantly elevated parasite loads (∼2.5 times higher). Extensive farming was associated with increased prevalence and burden, while seasonality influenced genus-specific occurrence. Limitations included small sample size for goats and absence of molecular diagnostics. This first study in Franceville (Gabon) demonstrates a high burden and diversity of gastrointestinal parasites in small ruminants, with key host and environmental factors influencing infection dynamics. The findings highlight the urgent need for genus-specific, integrated control measures adapted to local husbandry and seasonal patterns, especially targeting vulnerable groups like pregnant females. Future longitudinal studies employing molecular tools are recommended to refine parasite identification and optimize intervention strategies. Given the zoonotic potential of some parasites, a One Health approach is essential to improve animal health, public health, and food security in the region.
胃肠道寄生虫是全球小反刍动物健康和生产力的主要制约因素。在加蓬,特别是在弗朗斯维尔,关于寄生虫多样性、流行率和相关风险因素的数据仍然很少。了解这些方面对于制定有效的、有针对性的控制战略以及保障动物健康和粮食安全至关重要。2019年8月至10月进行了一项横断面研究,涵盖了加蓬东南部弗朗斯维尔的旱季和雨季。共收集120份粪便样本(113只绵羊和7只山羊),来自12个农场,分别代表半集约化和粗放化放牧系统。采用浮选和沉淀法对样品进行分析,鉴定和定量寄生虫卵和卵囊。记录宿主和环境数据,包括年龄、性别、生理状况、耕作制度和季节。统计分析包括患病率估计、关联的卡方检验、基于赤池信息准则的线性回归模型和模型选择。总体胃肠道寄生虫患病率为91.7%,与非洲区域数据一致。鉴定出10个寄生虫属,包括线虫、囊虫和原生动物。最常见的是食道口/血蜱复合体(64.6%)、艾美耳球虫(53.3%)、圆线虫(42.5%)和毛线虫(38.0%)。线虫的平均感染强度最高(每克1577个卵),其次是原生动物和绦虫。危险因素分析显示,与成虫相比,幼虫的侵染率更高,但寄生虫负荷较低,雄虫的负担高于雌虫,怀孕雌虫的寄生虫负荷显著升高(高2.5倍)。粗放型耕作与患病率和负担增加有关,而季节性影响属特异性发生。局限性包括山羊样本量小,缺乏分子诊断。这项在Franceville(加蓬)进行的首次研究表明,小型反刍动物的胃肠道寄生虫负担高且多样性高,关键的宿主和环境因素影响着感染动态。研究结果强调,迫切需要采取适合当地畜牧业和季节模式的针对特定物种的综合控制措施,特别是针对孕妇等弱势群体。建议未来采用分子工具进行纵向研究,以完善寄生虫鉴定和优化干预策略。鉴于某些寄生虫具有人畜共患的可能性,“同一个健康”方针对于改善该地区的动物卫生、公共卫生和粮食安全至关重要。
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引用次数: 0
Scorpion species distribution and sting epidemiology in Dena and Boyer-Ahmad, Iran – Implications for management 伊朗Dena和Boyer-Ahmad的蝎子种类分布和刺痛流行病学-对管理的启示
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-10-02 DOI: 10.1016/j.parepi.2025.e00462
Mohsen Fakhraei , Raziyeh Shahheidari , Amir Hossein Roozitalab , Kourosh Azizi , Mohsen Kalantari
Scorpion envenomation represents a significant public health burden in Iran, particularly in Kohgiluyeh and Boyer-Ahmad Province, which reports 40,000 to 50,000 cases annually. The ecological adaptability and diversity of scorpions contribute to their widespread distribution, heightening the risk of human encounters and the associated economic and psychosocial impacts. This epidemiological study investigated scorpion distribution and sting patterns in Dena and Boyer-Ahmad counties, southwestern Iran, during a six-month sampling period from spring to September 2024. Specimens were collected diurnally and nocturnally using UV light within 500-m radii of predetermined sites, primarily from beneath rocks and old walls in desert environments. Among 208 identified scorpions, Hottentotta zagrosensis (n = 132) predominated, followed by Hemiscorpius lepturus (n = 28), Compsobuthus rugosulus (n = 24), Mesobuthus eupeus (n = 20), and Orthochirus sp. (n = 4). The Buthidae family accounted for 86.53 % of specimens. Concurrently, clinical and demographic data from 156 sting cases recorded in local health centers during 2024 were analyzed. Males comprised 54.5 % of cases, with hands (48.1 %) and feet (37.2 %) being the most frequent sting sites. Most incidents occurred indoors (82.7 %) and between 6 p.m. and midnight (31.4 %). Notably, no fatalities were reported. This research provides the first comprehensive faunistic and epidemiological data for these counties, revealing H. zagrosensis as the dominant species. The findings establish a critical foundation for developing targeted ecological management strategies, public health interventions, and conservation efforts to mitigate scorpion-related risks in southwestern Iran.
蝎子中毒在伊朗是一个重大的公共卫生负担,特别是在科吉卢耶和博伊尔-艾哈迈德省,每年报告4万至5万例。蝎子的生态适应性和多样性有助于它们的广泛分布,增加了与人类相遇的风险以及相关的经济和社会心理影响。这项流行病学研究调查了伊朗西南部Dena和Boyer-Ahmad县的蝎子分布和蜇伤模式,采样期为2024年春季至9月的六个月。在预定地点的500米半径范围内,主要从沙漠环境中的岩石和旧墙下使用紫外线采集标本,每天和夜间采集。在已鉴定的208只蝎子中,以Hottentotta zagrosensis (n = 132)居多,其次是半蝎(n = 28)、厚蝎(n = 24)、中蝎(n = 20)和正蝎(n = 4)。布氏科占86.53%。同时,分析了2024年当地卫生中心记录的156例蜇伤病例的临床和人口统计数据。男性占54.5%,手(48.1%)和脚(37.2%)是最常见的刺痛部位。大多数事故发生在室内(82.7%)和下午6点至午夜(31.4%)之间。值得注意的是,没有死亡报告。本研究首次提供了这些县的综合区系和流行病学资料,揭示了扎格rosenh是优势种。研究结果为制定有针对性的生态管理战略、公共卫生干预措施和保护工作奠定了重要基础,以减轻伊朗西南部与蝎子有关的风险。
{"title":"Scorpion species distribution and sting epidemiology in Dena and Boyer-Ahmad, Iran – Implications for management","authors":"Mohsen Fakhraei ,&nbsp;Raziyeh Shahheidari ,&nbsp;Amir Hossein Roozitalab ,&nbsp;Kourosh Azizi ,&nbsp;Mohsen Kalantari","doi":"10.1016/j.parepi.2025.e00462","DOIUrl":"10.1016/j.parepi.2025.e00462","url":null,"abstract":"<div><div>Scorpion envenomation represents a significant public health burden in Iran, particularly in Kohgiluyeh and Boyer-Ahmad Province, which reports 40,000 to 50,000 cases annually. The ecological adaptability and diversity of scorpions contribute to their widespread distribution, heightening the risk of human encounters and the associated economic and psychosocial impacts. This epidemiological study investigated scorpion distribution and sting patterns in Dena and Boyer-Ahmad counties, southwestern Iran, during a six-month sampling period from spring to September 2024. Specimens were collected diurnally and nocturnally using UV light within 500-m radii of predetermined sites, primarily from beneath rocks and old walls in desert environments. Among 208 identified scorpions, <em>Hottentotta zagrosensis</em> (<em>n</em> = 132) predominated, followed by <em>Hemiscorpius lepturus</em> (<em>n</em> = 28), <em>Compsobuthus rugosulus</em> (<em>n</em> = 24), <em>Mesobuthus eupeus</em> (<em>n</em> = 20), and <em>Orthochirus sp.</em> (<em>n</em> = 4). The Buthidae family accounted for 86.53 % of specimens. Concurrently, clinical and demographic data from 156 sting cases recorded in local health centers during 2024 were analyzed. Males comprised 54.5 % of cases, with hands (48.1 %) and feet (37.2 %) being the most frequent sting sites. Most incidents occurred indoors (82.7 %) and between 6 p.m. and midnight (31.4 %). Notably, no fatalities were reported. This research provides the first comprehensive faunistic and epidemiological data for these counties, revealing <em>H. zagrosensis</em> as the dominant species. The findings establish a critical foundation for developing targeted ecological management strategies, public health interventions, and conservation efforts to mitigate scorpion-related risks in southwestern Iran.</div></div>","PeriodicalId":37873,"journal":{"name":"Parasite Epidemiology and Control","volume":"31 ","pages":"Article e00462"},"PeriodicalIF":2.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145269922","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
Efficacy of topical Ivermectin in controlling human Demodex infestation: Evidence from systematic review and meta-analysis 局部伊维菌素控制人类蠕形螨感染的效果:来自系统评价和荟萃分析的证据
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-09-23 DOI: 10.1016/j.parepi.2025.e00461
Anon Paichitrojjana , Kitsarawut Khuancharee , Anand Paichitrojjana

Background

Demodex mites are usually harmless but can contribute to inflammatory skin conditions like rosacea, blepharitis, and demodicosis. While new therapies like lotilaner, niclosamide, and berberine show promise against D. folliculorum, ivermectin remains widely used for its strong antiparasitic and anti-inflammatory effects. However, the direct effectiveness of ivermectin in reducing Demodex mite density in associated skin diseases is not fully quantified.

Materials and methods

A systematic review and meta-analysis were conducted following PRISMA guidelines. PubMed, Scopus, the Cochrane Library, and Google Scholar were searched for studies published between December 2014 and December 2024. Eligible studies have assessed the effect of topical ivermectin on Demodex mite number or density using standardized diagnostic methods. Risk of bias was evaluated using the Risk of Bias Assessment Tool for Non-randomized Studies (RoBANS) and the Cochrane Risk of Bias Tool. Data were pooled using a random-effects model where appropriate.

Results

A total of 2344 studies were identified, with five studies (n = 180 participants) meeting the inclusion criteria. All studies reported significant reductions in Demodex mite count or density after daily application of topical ivermectin 1 %. Meta-analyses demonstrated a mean reduction of 70.01 mites/cm2 and an 80 % decrease in Demodex-positive (≥5 D/cm2) rates. A 16-week treatment duration was associated with a notable reduction, with effects sustained for up to 12 weeks post-treatment. Only mild, localized adverse events were reported, with no systemic side effects observed.

Conclusion

Topical ivermectin is effective and well-tolerated for reducing the number and density of Demodex mites. A 16-week treatment course significantly decreases mite burden and improves clinical outcomes with minimal adverse events. However, the potential for mite repopulation after treatment underscores the importance of ongoing monitoring. Study heterogeneity and the limited number of included trials warrant cautious interpretation of the findings.
蠕形螨通常是无害的,但可引起皮肤炎症,如酒渣鼻、眼炎和蠕形螨病。虽然像洛替拉、氯硝胺和小檗碱这样的新疗法显示出治疗滤泡杆菌的希望,但伊维菌素仍因其强大的抗寄生虫和抗炎作用而被广泛使用。然而,伊维菌素在降低相关皮肤病蠕形螨密度方面的直接效果尚未完全量化。材料和方法按照PRISMA指南进行系统评价和荟萃分析。PubMed、Scopus、Cochrane Library和谷歌Scholar检索了2014年12月至2024年12月间发表的研究。采用标准化诊断方法评估了局部使用伊维菌素对蠕形螨数量或密度的影响。使用非随机研究偏倚风险评估工具(RoBANS)和Cochrane偏倚风险评估工具评估偏倚风险。在适当的情况下,使用随机效应模型汇总数据。结果共纳入2344项研究,其中5项研究(n = 180名受试者)符合纳入标准。所有的研究都报告说,每天使用局部伊维菌素后,蠕形螨的数量或密度显著降低1%。荟萃分析显示,平均减少70.01螨/cm2,蠕形螨阳性(≥5 D/cm2)率降低80%。16周的治疗时间与显著减少相关,效果持续到治疗后12周。仅报道了轻微的局部不良事件,未观察到全身副作用。结论局部使用伊维菌素可有效降低蠕形螨的数量和密度,且耐受性良好。一个16周的疗程显著减少螨负担和改善临床结果与最小的不良事件。然而,治疗后螨虫繁殖的可能性强调了持续监测的重要性。研究的异质性和纳入试验的有限数量要求对研究结果进行谨慎的解释。
{"title":"Efficacy of topical Ivermectin in controlling human Demodex infestation: Evidence from systematic review and meta-analysis","authors":"Anon Paichitrojjana ,&nbsp;Kitsarawut Khuancharee ,&nbsp;Anand Paichitrojjana","doi":"10.1016/j.parepi.2025.e00461","DOIUrl":"10.1016/j.parepi.2025.e00461","url":null,"abstract":"<div><h3>Background</h3><div><em>Demodex</em> mites are usually harmless but can contribute to inflammatory skin conditions like rosacea, blepharitis, and demodicosis. While new therapies like lotilaner, niclosamide, and berberine show promise against <em>D. folliculorum</em>, ivermectin remains widely used for its strong antiparasitic and anti-inflammatory effects. However, the direct effectiveness of ivermectin in reducing <em>Demodex</em> mite density in associated skin diseases is not fully quantified.</div></div><div><h3>Materials and methods</h3><div>A systematic review and meta-analysis were conducted following PRISMA guidelines. PubMed, Scopus, the Cochrane Library, and Google Scholar were searched for studies published between December 2014 and December 2024. Eligible studies have assessed the effect of topical ivermectin on <em>Demodex</em> mite number or density using standardized diagnostic methods. Risk of bias was evaluated using the Risk of Bias Assessment Tool for Non-randomized Studies (RoBANS) and the Cochrane Risk of Bias Tool. Data were pooled using a random-effects model where appropriate.</div></div><div><h3>Results</h3><div>A total of 2344 studies were identified, with five studies (<em>n</em> = 180 participants) meeting the inclusion criteria. All studies reported significant reductions in <em>Demode</em>x mite count or density after daily application of topical ivermectin 1 %. Meta-analyses demonstrated a mean reduction of 70.01 mites/cm<sup>2</sup> and an 80 % decrease in <em>Demodex</em>-positive (≥5 D/cm<sup>2</sup>) rates. A 16-week treatment duration was associated with a notable reduction, with effects sustained for up to 12 weeks post-treatment. Only mild, localized adverse events were reported, with no systemic side effects observed.</div></div><div><h3>Conclusion</h3><div>Topical ivermectin is effective and well-tolerated for reducing the number and density of <em>Demodex</em> mites. A 16-week treatment course significantly decreases mite burden and improves clinical outcomes with minimal adverse events. However, the potential for mite repopulation after treatment underscores the importance of ongoing monitoring. Study heterogeneity and the limited number of included trials warrant cautious interpretation of the findings.</div></div>","PeriodicalId":37873,"journal":{"name":"Parasite Epidemiology and Control","volume":"31 ","pages":"Article e00461"},"PeriodicalIF":2.4,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145222903","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
Culicidae vector ecology in southern Iran: Integrating Faunistics and molecular analysis of blood-feeding preferences to strengthen malaria surveillance in transition zones 伊朗南部库蚊病媒生态:综合吸血偏好的特征和分子分析,加强过渡地区的疟疾监测
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-09-20 DOI: 10.1016/j.parepi.2025.e00460
Mohsen Kalantari, Kourosh Azizi
Culicidae mosquitoes are pivotal vectors of malaria and arboviral diseases, necessitating continuous surveillance in transitional zones where ecological and anthropogenic factors amplify transmission risks. This study investigated the fauna and blood-feeding preferences of Culicidae in Shiraz, southern Iran—a region adjacent to malaria-endemic provinces—using molecular methods to inform vector control strategies. From April 2023 to January 2024, 1249 adult mosquitoes were collected across urban and rural sites via pyrethrum spray catches, CDC light traps, and manual aspiration. Morphological identification revealed Culex pipiens (39.0 %), Cx. quinquefasciatus (23.6 %), and Aedes caspius (19.6 %) as dominant Culicinae species, while Anopheles dthali (80.6 % of Anophelinae) and An. sacharovi (19.4 %) comprised the primary Anophelinae. PCR-RFLP analysis of mitochondrial “cytochrome b” gene fragments from 50 blood-fed females demonstrated distinct host preferences: Anopheles spp. primarily fed on rodents/dogs (41 %) and humans (28 %), whereas Cx. pipiens exhibited marked anthropophily (54 % human blood meals). Spatial clustering of An. sacharovi in irrigation-rich northern Shiraz (χ2 = 12.7, *p* < 0.01) and mixed human-livestock blood meals in Cx. pipiens highlighted ecological overlap favoring zoonotic spillover. These findings underscore the dual role of Cx. pipiens as an important vector for arboviruses and the residual malaria risk posed by Anopheles spp. in transitional zones. Molecular techniques proved critical for precise blood meal identification, surpassing traditional serological limitations. The study advocates for integrated vector management—combining targeted insecticide use, environmental modification, and cross-border surveillance—to mitigate malaria resurgence and emerging arboviral threats. Sustained entomological monitoring, leveraging molecular tools, is essential to safeguard Iran's malaria elimination achievements and address evolving public health challenges.
库蚊科是疟疾和虫媒病毒性疾病的关键媒介,因此需要在生态和人为因素加大传播风险的过渡区进行持续监测。本研究利用分子方法调查了伊朗南部设拉子(靠近疟疾流行省份的地区)库蚊的区系和吸血偏好,为媒介控制策略提供信息。2023年4月- 2024年1月,采用除虫菊喷雾捕蚊、CDC诱蚊灯诱蚊法和人工吸蚊法,在城市和农村采集成蚊1249只。形态学鉴定发现淡库蚊占39.0%;库蚊科优势种为致倦库蚊(23.6%)和海纹伊蚊(19.6%);sacharovi(19.4%)为主要按蚊科。对50只吸血雌性按蚊线粒体“细胞色素b”基因片段的PCR-RFLP分析显示出不同的宿主偏好:按蚊主要以啮齿动物/狗(41%)和人类(28%)为食;库蚊表现出明显的亲人性(54%的人血)。安阳的空间聚类。富灌溉的北设拉子(Shiraz)的sacharovi (χ2 = 12.7, *p* < 0.01)和Cx的人畜混合血餐。库蚊强调生态重叠有利于人畜共患病溢出。这些发现强调了Cx的双重作用。库蚊是虫媒病毒的重要传播媒介和过渡带疟蚊残留风险。事实证明,分子技术对精确的血粉鉴定至关重要,超越了传统血清学的局限性。该研究提倡综合的病媒管理——结合有针对性的杀虫剂使用、环境改造和跨境监测——以减轻疟疾死灰复燃和新出现的虫媒病毒威胁。利用分子工具进行持续的昆虫学监测,对于维护伊朗消除疟疾的成就和应对不断变化的公共卫生挑战至关重要。
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引用次数: 0
Strongyloides seroprevalence in patients with advanced chronic kidney disease at a tertiary hospital in Malaysia: Epidemiological profiles and comparison of two assays 马来西亚一家三级医院晚期慢性肾病患者的血清类圆线虫患病率:流行病学概况和两种检测方法的比较
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-09-19 DOI: 10.1016/j.parepi.2025.e00458
Emelia Osman , Rahmah Noordin , Rozita Mohd , Lydia Kamaruzaman , Siti Nor Azreen Abdul Manap , S. Izuddin Mohd. Zali , Nur Afrina Azhar , Nor Suhada Anuar
Strongyloides stercoralis infection poses significant risks to individuals with suppressed immune systems, including patients with chronic kidney disease (CKD). However, data on its prevalence in this population, particularly in Southeast Asia, remains scarce. This study aimed to determine the seroprevalence using two assays, as well as to describe its epidemiological characteristics and associated laboratory parameters among patients with advanced CKD at a tertiary hospital in Kuala Lumpur, Malaysia. A total of 220 patients with stages 4 and 5 CKD were recruited. Serum samples were screened using a commercial IgG-ELISA (Bordier) and an IgG4-based rapid diagnostic test (IgG4-RDT). Epidemiological and clinical data were collected through structured interviews and medical records. The overall S. stercoralis seroprevalence was 44 %, with 41.8 % detected by IgG4-RDT and 6.8 % by IgG-ELISA, showing only slight agreement (κ = 0.2). These findings suggest that, despite the impaired humoral immunity typically observed in advanced CKD patients, specific IgG4 responses remain sufficiently detectable. It may reflect both a relatively preserved IgG4 response and the higher sensitivity of the IgG4-based assay in this population. No significant associations were found between seropositivity and demographic, socioeconomic, lifestyle, or laboratory parameters. However, cough was significantly associated with seropositivity. The results highlight a potentially underrecognized burden of Strongyloides infection among Malaysian CKD patients. Incorporating serological screening, particularly with the IgG4-RDT, into nephrology care may facilitate early detection and better management. Future studies are warranted to assess treatment outcomes and preventive strategies, including ivermectin prophylaxis.
粪类圆线虫感染对免疫系统受到抑制的个体,包括慢性肾脏疾病(CKD)患者具有重大风险。然而,在这一人群中,特别是在东南亚,关于其流行情况的数据仍然很少。本研究旨在通过两种检测方法确定马来西亚吉隆坡一家三级医院晚期CKD患者的血清患病率,并描述其流行病学特征和相关实验室参数。共招募了220名4期和5期CKD患者。使用商用IgG-ELISA (Bordier)和基于igg4的快速诊断试验(IgG4-RDT)筛选血清样本。通过结构化访谈和医疗记录收集流行病学和临床数据。血清总阳性率为44%,其中IgG4-RDT检测阳性率为41.8%,IgG-ELISA检测阳性率为6.8%,两者差异有统计学意义(κ = 0.2)。这些发现表明,尽管在晚期CKD患者中通常观察到体液免疫受损,但特异性IgG4反应仍然可以充分检测到。这可能反映了相对保存的IgG4反应和在该人群中基于IgG4的检测的更高灵敏度。血清阳性与人口统计学、社会经济、生活方式或实验室参数之间未发现显著关联。然而,咳嗽与血清阳性显著相关。结果强调了马来西亚CKD患者中潜在的未被充分认识的圆形线虫感染负担。将血清学筛查,特别是IgG4-RDT筛查纳入肾脏病护理可能有助于早期发现和更好的管理。未来的研究有必要评估治疗结果和预防策略,包括伊维菌素预防。
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引用次数: 0
Level, trends and factors associated with early seeking care for children under five with a fever in Guinea 几内亚五岁以下发烧儿童早期求医的水平、趋势和相关因素
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-09-19 DOI: 10.1016/j.parepi.2025.e00459
Sidiki Kaba , Mamadou Dian Dilé Diallo , Facinet Conté
Malaria remains the leading cause of morbidity in Guinea. To contain it, the National Malaria Control Programme, following the guidelines of the World Health Organisation, prioritises the mass distribution of insecticide-treated mosquito nets, seasonal chemoprevention, intermittent preventive treatment for pregnant women and the proper management of all confirmed cases. The latest survey on malaria and anaemia indicators conducted in 2021 indicates a malaria prevalence of 17 % among children under five. Among these children who had a fever in the two weeks preceding the survey, only 32 % of cases were treated within 48 h in 2021, compared to 37 % in 2018. This represents a decline in the use of health care services, even though the prevalence of malaria remains high. In light of this observation, it is essential to identify the factors that explain this low use of health care and/or treatment for fever in children under five in Guinea.
In this context, the data used comes from the 2018 Demographic and Health Survey and the 2021 Malaria and Anaemia Indicator Survey. Factors associated with early recourse to care for children with fever in Guinea are identified through descriptive and explanatory analyses.
The results show that early recourse to care for children with fever is low and declining, while the prevalence of malaria infections has remained unchanged (17 %) since 2018. Indeed, early recourse to health care for children is low in rural areas, in poor households and in the regions of Boké, Kindia, Labé and Nzérékoré.
Research into the factors associated with children suffering from fever seeking care early, particularly in endemic areas, could help to identify new strategies for eradicating malaria in Guinea. The impact of such research could be profound, saving countless lives and improving the health of the country's children.
疟疾仍然是几内亚发病的主要原因。为了控制疟疾,国家疟疾控制规划遵循世界卫生组织的指导方针,优先考虑大规模分发驱虫蚊帐,季节性化学预防,对孕妇进行间歇性预防治疗,并对所有确诊病例进行适当管理。2021年进行的关于疟疾和贫血指标的最新调查显示,五岁以下儿童的疟疾患病率为17%。在调查前两周发烧的儿童中,2021年只有32%的病例在48小时内得到治疗,而2018年这一比例为37%。这表明,尽管疟疾的发病率仍然很高,但利用保健服务的人数有所下降。鉴于这一观察结果,必须查明导致几内亚五岁以下儿童对发烧的卫生保健和/或治疗使用率低的因素。在这方面,使用的数据来自2018年人口与健康调查和2021年疟疾和贫血指标调查。通过描述性和解释性分析确定了几内亚发烧儿童早期求助于护理的相关因素。结果显示,对发烧儿童的早期求助率很低且在下降,而疟疾感染率自2018年以来保持不变(17%)。事实上,在农村地区、贫困家庭以及bok、Kindia、lab和nzsamr kor等地区,儿童早期获得保健服务的比例很低。研究与发烧儿童早期求医有关的因素,特别是在流行地区,可能有助于确定在几内亚根除疟疾的新战略。这种研究的影响可能是深远的,可以挽救无数人的生命,改善该国儿童的健康。
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引用次数: 0
Distribution of ixodid ticks of cattle and associated risk factors in and around Guder town, west Shewa zone, Oromia, Ethiopia 埃塞俄比亚奥罗米亚州西谢瓦区古德尔镇及其周边地区牛的伊蚊蜱分布及相关危险因素
IF 2.4 Q3 INFECTIOUS DISEASES Pub Date : 2025-08-01 DOI: 10.1016/j.parepi.2025.e00454
Isayas Asefa Kebede , Kirubel Abreham , Asemamaw Alemayew , Dimamnesh Worku , Tefera Tarekagne , Megersa Akasa Debele , Segni Bedasa Gudina , Abrahim Dawed Ahmed , Haben Fesseha Gebremeskel
Ticks are the most prominent ectoparasites of cattle, causing significant losses. From March to May 2024, a cross-sectional study was carried out in and around Guder town of the west Shewa zone of the Oromia region, Ethiopia, to identify species of ixodid ticks infesting cattle and estimate their prevalence and associated risk factors. Adult ixodid ticks were collected from 200 cattle using systematic random sampling methods and classified into species based on their morphology using a stereomicroscope. Of the examined cattle, 75.0 % (95 % CI: 68.5–80.6) were infested with one or more tick species. The highest prevalence of tick parasites was recorded in Mamo Mezemir kebele, male, young, extensive management system, and good-body condition of cattle, with prevalences of 94.7 %, 87.5 %, 86.7 %, 77.6 %, and 80.0 %, respectively compared to counterparts. Four genera of ticks were identified viz. Amblyomma, Rhipicephalus (Boophilus), Hyalomma, and Rhipicephalus. A total of 702 ticks were collected. Rhipicephalus evertsi evertsi and Hyalomma rufipes were the most (38.7 %) and least (8.1 %) abundant tick species, respectively. The peasant associations and sex were the only risk factors associated with the tick infestations (p < 0.05). Cattle in the Mamo Mezemir kebele were 17 (OR = 16.9; 95 %CI: 1.9–149.2) times more likely to be infested by ticks than those in other regions. This study shows that ticks were a most significant concern for cattle in the studied area. Thus, strategic tick control, which includes the use of acaricides, and creating awareness for the livestock owners about the impact of tick infestation is recommended.
蜱是牛最主要的体外寄生虫,造成重大损失。从2024年3月至5月,在埃塞俄比亚奥罗米亚地区西谢瓦区Guder镇及其周围进行了一项横断面研究,以确定感染牛的伊蚊蜱的种类,并估计其流行率和相关危险因素。采用系统随机抽样的方法,采集了200头牛的成年蜱,并用体视显微镜对其形态进行了分类。在检查的牛中,75.0% (95% CI: 68.5-80.6)感染了一种或多种蜱虫。蜱虫感染率最高的是马莫·梅兹米尔·凯贝勒、公牛、幼牛、粗放型管理系统和体况良好的牛,分别为94.7%、87.5%、86.7%、77.6%和80.0%。经鉴定,蜱属有羊蜱、鼻头蜱、透明蜱和鼻头蜱4属。共采集蜱虫702只。蜱种数量最多(38.7%)的是疣鼻头蜱,最少(8.1%)的是斑纹透明眼蜱。农会和性别是影响蜱虫侵害的唯一危险因素(p < 0.05)。Mamo Mezemir kebele地区的牛被蜱虫感染的可能性是其他地区的17倍(OR = 16.9; 95% CI: 1.9-149.2)。这项研究表明,蜱虫是研究地区牛最关心的问题。因此,建议采取战略控制蜱虫,其中包括使用杀螨剂,并提高牲畜所有者对蜱虫侵扰影响的认识。
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引用次数: 0
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Parasite Epidemiology and Control
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