Dengue Vector, Its Biology, Control Methods and Emergence of Insecticide Resistance

IntechOpen eBooks, Год журнала: 2025, Номер unknown

Опубликована: Янв. 30, 2025

The World Health Organization (WHO) estimates that 100–400 million people are infected with dengue each year, about 100 becoming sick and 40,000 dying from severe dengue. Dengue is a viral infection, the bite of an mosquito, it spreads to humans. Stegomyia aegypti main vector transmitting four virus serotypes. It crucial control this disease in absence no effective vaccines or drugs available existing challenges like insecticide resistance. Effective measures critical for achieving sustaining reduction morbidity caused by These aim reduce transmission, ultimately decreasing infection incidence preventing outbreaks disease. Understanding behaviors environmental factors surveillance strategies combat transmission other arboviruses. remains cornerstone fight against arboviral diseases.

Язык: Английский

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Dengue: epidemiology, diagnosis methods, treatment options, and prevention strategies

Archives of Virology, Год журнала: 2025, Номер 170(3)

Опубликована: Фев. 6, 2025

Язык: Английский

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Nano-interventions for dengue: a comprehensive review of control, detection and treatment strategies

Inflammopharmacology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 20, 2025

Язык: Английский

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Aedes Distribution and Meteorological Effect on Ovitrap Index in Coastal Area of Besut, Terengganu: An Entomological Study

Опубликована: Март 18, 2025

INTRODUCTION:_Aedes_ species are a major public health concern due to their ability be efficient vectors of dengue, and other arboviruses. Ovitrap is an entomological surveillance tool designed measure the density _Aedes_. Ovitraps used for monitoring can detect _Aedes_ mosquito populations, thus acting as early warning system prevent dengue outbreaks. Meteorological factor such temperature rainfall played great role in affecting abundance mosquitoes. This study aimed assess presence species, determine correlation meteorological factors with index. METHODOLOGY: A cross-sectional was conducted coastal area Besut district, Terengganu state Malaysia. The samples were 3120 placed only occupied premises. Data collected from Department database respective sentinel stations. independent variables environmental density, while dependent variable index which served indicator density. Descriptive analysis employed assessing index, determining Index temperature, distribution. p-value <0.05 considered statistically significant. RESULTS:_Aedes_ distribution showed that _Aedesaegypti_ more prevalent than_ Aedes albopictus_, 2,383 larvae aegypti being recorded compared 2,198 albopictus. findings also revealed significant between (r=0.82, p=0.03) but no distribution, (r=0.15, p=0.62). CONCLUSION: Temperature plays important high population highlights need proper control actions source reduction.

Язык: Английский

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Aedes Distribution and Meteorological Effect on Ovitrap Index in Coastal Area of Besut, Terengganu: An Entomological Study

Qeios, Год журнала: 2025, Номер 7(4)

Опубликована: Апрель 2, 2025

INTRODUCTION:_Aedes_ species are a major public health concern due to their ability be efficient vectors of dengue, and other arboviruses. Ovitrap is an entomological surveillance tool designed measure the density _Aedes_. Ovitraps used for monitoring can detect _Aedes_ mosquito populations, thus acting as early warning system prevent dengue outbreaks. Meteorological factor such temperature rainfall played great role in affecting abundance mosquitoes. This study aimed assess presence species, determine correlation meteorological factors with index. METHODOLOGY: A cross-sectional was conducted coastal area Besut district, Terengganu state Malaysia. The samples were 3120 placed only occupied premises. Data collected from Department database respective sentinel stations. independent variables environmental density, while dependent variable index which served indicator density. Descriptive analysis employed assessing index, determining Index temperature, distribution. p-value <0.05 considered statistically significant. RESULTS:_Aedes_ distribution showed that _Aedesaegypti_ more prevalent than_ Aedes albopictus_, 2,383 larvae aegypti being recorded compared 2,198 albopictus. findings also revealed significant between (r=0.82, p=0.03) but no distribution, (r=0.15, p=0.62). CONCLUSION: Temperature plays important high population highlights need proper control actions source reduction.

Язык: Английский

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Sex Ratio Distortion of Aedes aegypti (L.) in El Salvador: Biocontrol Implications for Seasonally Dry Urban Neotropical Environments

Diversity, Год журнала: 2025, Номер 17(4), С. 257 - 257

Опубликована: Апрель 5, 2025

Vector-borne diseases (VBDs) remain a major public health burden, particularly in tropical and subtropical regions. Aedes aegypti mosquitoes are primary vectors of several VBDs, understanding their population dynamics is critical for developing effective control strategies. This study investigates seasonal sex ratio variation A. populations within urban environments El Salvador’s seasonally dry neotropical biomes. Using data from an ongoing surveillance program, we analyzed the temporal distribution male female across eight sampling events. Our results reveal significant deviations expected 1:1 ratio, with pronounced bias during season shift toward parity wet season. These findings suggest that environmental anthropogenic factors influence dynamics, potentially affecting reproductive success persistence. The observed distortion has important implications vector ecology biocontrol, emphasizing need to incorporate ecological into management Integrating these insights biocontrol programs could enhance effectiveness interventions aimed at reducing VBD transmission

Язык: Английский

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Significance of vertical transmission of arboviruses in mosquito-borne disease epidemiology

Parasites & Vectors, Год журнала: 2025, Номер 18(1)

Опубликована: Апрель 9, 2025

Abstract Mosquito-borne diseases (MBDs) are increasingly prevalent due to the resultant impact of global change with significant health and economic impacts worldwide. Dengue virus (DENV), chikungunya (CHIKV), Zika (ZIKV), yellow fever (YFV), Japanese encephalitis (JEV), West Nile (WNV) transmitted by Aedes Culex species have been identified as arboviruses public interest. The vertical transmission (VT) refers process where infected mosquitoes transmit viruses their offspring; this has often overlooked in MBD epidemiology. We conducted a systematic review evaluate role VT occurrence, prevalence, spread MBDs, focusing on study types, mosquito species, genera. In total, 73 studies from 2005 2024 relating population were reviewed. Findings revealed occurrence across multiple natural experimental settings, variation rates depending vector genus, location. aegypti , albopictus vexans pipiens tarsalis quinquefasciatus that support VT, while pathogens be vertically DENV, ZIKV, WNV, CHIKV, YFV, Sindbis (SINV), Ross River (RRV), Mayaro (MAYV). reported minimum, infection rate (MIR) varied type Also, high may precede mosquito-borne disease outbreak. These findings indicate though overlooked, contributes dynamics could influence outbreaks endemism, especially under changing climatic conditions, highlighting need for incorporating mathematical models, studies, control strategies understand given its potential sustaining arbovirus influencing outbreak dynamics. Graphical abstract

Язык: Английский

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Evaluation of mycoparasitic Trichoderma atroviride and entomopathogenic Aspergillus niger as potential bioinsecticides against the dengue vector, Aedes aegypti

Frontiers in Cellular and Infection Microbiology, Год журнала: 2025, Номер 15

Опубликована: Апрель 10, 2025

Introduction Over the past three decades, dengue disease incidence has significantly increased worldwide, creating serious public health concerns. The principal mosquito vector, Aedes aegypti , exhibits resistance to commonly used insecticides, reducing efficacy of vector control measures. Thus, necessity for alternate strategies is critical. Using bioinsecticides such as entomopathogenic fungi (EPF) one strategy. This study details evaluation mycoparasitic Trichoderma atroviride and Aspergillus niger against pyrethroid-resistant pyrethroid-susceptible Ae. populations. Materials methods Molecular identification isolated fungal strains was done using ITS-rDNA sequence data. Larvicidal adulticidal assays were performed different spore concentrations species. Pupal emergence assessed from survived larvae larvicidal assays. Results revealed highest mortality 60% T . after 9 days exposure when compared with 52% A 6 exposure. No significant difference observed between colonies, suggesting a lack connection prior status EPF pathogenicity. pupal observed, although duration prolonged. Both exhibited 100% in assays, signifying potential use two species adulticides. Conclusion However, further studies are needed understand biology EPF, its mechanism action, immune pathways activated, effect on non-target organisms. findings have implications possible aegypti.

Язык: Английский

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Exploring 97 Years of Aedes aegypti as the Vector for Dengue, Yellow Fever, Zika, and Chikungunya (Diptera: Culicidae): Scientometric Analysis

Interactive Journal of Medical Research, Год журнала: 2025, Номер 14, С. e65844 - e65844

Опубликована: Апрель 23, 2025

Background Aedes aegypti is an important vector that transmits dengue, Zika, chikungunya, and yellow fever viruses. Although research on has been conducted for decades, scientometric studies are scarce, limited to regions, cover short periods. Thus, there still a knowledge gap in the current trend, focuses directions, leading authors collaboration, journal citation impacts, countries, worldwide collaborations. Objective The objectives of study investigate focus impact, journals, countries published works inform gaps future direction control vector. Methods In this study, we searched Scopus database articles from year 1927 until April 5th, 2024, included articles, reviews, books, book chapters were written English. A total 16,247 160 journals with 481,479 citations included. Inconsistencies authors’ names checked cleaned using OpenRefine. data grouped into 4 periods; years 1927-1999, 2000-2009, 2010-2019, 2020-2023. relative growth rate doubling time publications calculated. analysis was VOSviewer, R bibliometrics, citeSpace. Results overall RGR 0.1. Doubling increased 9.3 1978-1998 12.1 2000-2009. main clusters “using Wolbachia,” “Dengue Zika,” “worldwide diversity,” “community support,” “larvicidal activity,” “mosquito genotype-dependent,” “sterile insect technique.” Journal Medical Entomology (758/16,247, 4.7%). most cited authored by Halstead SB team Science (N=1355) Kraemer MU eLife (N=1324). United States (5806/23,538, 24.7%) Brazil (2035/23,538, 8.6%) top countries. Gubler DJ co-cited author (n=2892) 2000 2019. cluster patterns informed significant specialty across time. Authors various specialized fields tended collaborate especially neighboring Countries more funding papers. Conclusions Researchers or entomologists could understand plan pathways. This contributed public health stakeholders improving interventions elucidated extent subject areas.

Язык: Английский

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Effect of inoculation with arbuscular mycorrhizal fungi on larvicidal activity and phenolic compounds in Mimosa tenuiflora cultivated under field conditions

Beni-Suef University Journal of Basic and Applied Sciences, Год журнала: 2025, Номер 14(1)

Опубликована: Апрель 28, 2025

Abstract Background Mimosa tenuiflora (Willd.) is an essential leguminous tree used in Brazilian northeastern folk medicine, and its extracts have been tested against larvae of Aedes aegypti . These tests typically use parts from adult plants collected natural environments. However, M. seedlings can be successfully produced using arbuscular mycorrhizal fungi (AMF) inoculation technology. Previous studies reported the benefits on growth accumulation secondary metabolites, while data how affects biological activities remain limited. This work investigated potential field with to enhance production, focusing increasing total phenolic levels improving larvicidal activity Ae. Results Inoculation Gigaspora albida resulted higher phenolics, death larvae, lower lethal concentration (LC) compared other treatments. The phenolics was 249.87 mg. g −1 , percentage after 48 h 68.33%. At h, LC 50 90 values were 147 µg. mL 1301.83 for inoculated G. albida. For non-inoculated controls, 800.67 8194.26 Claroideoglomus etunicatum 1179.16 3050.32 No differences observed mortality between C. controls. increased might contribute potent activity. Under conditions, increases L3 proving more effective than Conclusions results herein corroborate technology plant-derived activities, indicating as best fungus improve effects extracts. Graphical abstract

Язык: Английский

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