6,488 results match your criteria Bites Insects

Assessment of malaria transmission intensity and insecticide resistance mechanisms in three rural areas of the Moyen Ogooué Province of Gabon.

Parasit Vectors 2022 Jun 20;15(1):217. Epub 2022 Jun 20.

Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.

Background: Vector control is considered to be the most successful component of malaria prevention programs and a major contributor to the reduction of malaria incidence over the last two decades. However, the success of this strategy is threatened by the development of resistance to insecticides and behavioural adaptations of vectors. The aim of this study was to monitor malaria transmission and the distribution of insecticide resistance genes in Anopheles populations from three rural areas of the Moyen Ogooué Province of Gabon. Read More

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A review of public health important fleas (Insecta, Siphonaptera) and flea-borne diseases in India.

J Vector Borne Dis 2022 Jan-Mar;59(1):12-21

ICMR-Vector Control Research Centre Field Station, Madurai, Tamil Nadu, India.

Fleas (Insecta, Siphonaptera) are important vectors of plague and murine typhus in many parts of the world. Currently, about 2700 flea species were described in the world. The most common vector flea Xenopsylla cheopis is found throughout India, but X. Read More

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Entomological indicators of malaria transmission prior to a cluster-randomized controlled trial of a 'lethal house lure' intervention in central Côte d'Ivoire.

Malar J 2022 Jun 15;21(1):188. Epub 2022 Jun 15.

Vector Control Product Evaluation Centre-Institut Pierre Richet (VCPEC-IPR), Institut Pierre Richet (IPR), Bouaké, Côte d'Ivoire.

Background: A study was conducted prior to implementing a cluster-randomized controlled trial (CRT) of a lethal house lure strategy in central Côte d'Ivoire to provide baseline information on malaria indicators in 40 villages across five health districts.

Methods: Human landing catches (HLC) were performed between November and December 2016, capturing mosquitoes indoors and outdoors between 18.00 and 08. Read More

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Subcutaneous Calcification at Honeybee Sting Site.

Indian Pediatr 2022 Jun;59(6):506

Department of Pediatrics, All India Institute of Medical Sciences (AIIMS), Mangalagiri, Andhra Pradesh, India.

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From Insect Bites to a Skin Autoimmune Disease: A Conceivable Pathway to Endemic Pemphigus Foliaceus.

Front Immunol 2022 27;13:907424. Epub 2022 May 27.

Department of Dermatology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.

In the endemic variants of pemphigus foliaceus (PF), in Brazil and Tunisia, patients generate pathogenic IgG4 anti-desmoglein 1 autoantibodies. Additionally, these patients possess antibodies against salivary proteins from sand flies that react with Dsg1, which may lead to skin disease in susceptible individuals living in endemic areas. This minireview focuses on recent studies highlighting the possible role of salivary proteins from () in EPF from Brazil and () in EPF from Tunisia. Read More

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Inference and dynamic simulation of malaria using a simple climate-driven entomological model of malaria transmission.

PLoS Comput Biol 2022 06 9;18(6):e1010161. Epub 2022 Jun 9.

Columbia University, Mailman School of Public Health, New York, New York, United States of America.

Given the crucial role of climate in malaria transmission, many mechanistic models of malaria represent vector biology and the parasite lifecycle as functions of climate variables in order to accurately capture malaria transmission dynamics. Lower dimension mechanistic models that utilize implicit vector dynamics have relied on indirect climate modulation of transmission processes, which compromises investigation of the ecological role played by climate in malaria transmission. In this study, we develop an implicit process-based malaria model with direct climate-mediated modulation of transmission pressure borne through the Entomological Inoculation Rate (EIR). Read More

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What's Eating You? Mosquitoes (Culicidae).

Cutis 2022 Mar;109(3):126-128

Medical University of South Carolina, Charleston. Ms. Andrews is from the College of Medicine, and Drs. Ellis and Elston are from the Department of Dermatology and Dermatologic Surgery.

Mosquito bites cause a variety of reactions ranging from pruritic papules to severe systemic hypersensitivity reactions. The salivary glands of mosquitoes have been found to contain more than 70 different allergens. Herein, we describe the pathophysiology and clinical appearance of mosquito bite reactions as well as proper management of this condition. Read More

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Armigeres subalbatus is a potential vector for Zika virus but not dengue virus.

Infect Dis Poverty 2022 Jun 4;11(1):62. Epub 2022 Jun 4.

Department of Pathogen Biology, Institute of Tropical Medicine, School of Public Health, Southern Medical University, Guangzhou, China.

Background: Zika virus (ZIKV) and dengue virus (DENV) are closely related flaviviruses primarily transmitted by Aedes mosquitoes. Armigeres subalbatus is an emerging and widely distributed mosquito, and ZIKV has been detected and isolated from it. However, it is not clear whether Ar. Read More

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Experiment in semi-natural conditions did not confirm the influence of malaria infection on bird attractiveness to mosquitoes.

Parasit Vectors 2022 Jun 2;15(1):187. Epub 2022 Jun 2.

Department of Ecology and Evolution, University of Lausanne, Lausanne, 1015, Switzerland.

Background: Changes in host phenotype following parasite infection are often considered as host manipulation when they seem advantageous for the parasite. However, putative cases of host manipulation by parasites are rarely tested in field-realistic conditions. Infection-induced phenotypic change cannot be conclusively considered as host manipulation if no evidence shows that this trait is adaptive for the parasite in the wild. Read More

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The Parasite Load of Modulates Feeding and Defecation Patterns of the Chagas Disease Vector .

Microorganisms 2022 May 10;10(5). Epub 2022 May 10.

Escuela de Medicina Veterinaria, Facultad de Ciencias Médicas, Universidad Bernardo O'Higgins, Santiago 8370854, Chile.

is the causal agent of Chagas disease, a parasitic zoonosis transmitted mainly through the feces of triatomine insects. is the main triatomine vector of this disease in South America. Previous research has shown that infection modifies the behavior of triatomines. Read More

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Identification and Distribution of Human-Biting Ticks in Northwestern Spain.

Insects 2022 May 18;13(5). Epub 2022 May 18.

Infectious and Tropical Diseases Research Group (e-INTRO), Biomedical Research Institute of Salamanca-Research Centre for Tropical Diseases at the University of Salamanca (IBSAL-CIETUS), Faculty of Pharmacy, University of Salamanca, 37008 Salamanca, Spain.

Ticks transmit a wide diversity of pathogens to a great variety of hosts, including humans. We conducted a tick surveillance study in northwestern Spain between 2014 and 2019. Ticks were removed from people and identified. Read More

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Allergenome profiling of Vespa orientalis venom by serum IgE in patients with anaphylactic reaction to this hornet sting.

Toxicon 2022 Jul 22;214:130-135. Epub 2022 May 22.

Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran. Electronic address:

Background: Hymenoptera stings are one of the most common causes of anaphylaxis. Vespa orientalis (red hornet) is a common and very aggressive hymenopteran endemic in central and southern areas of Iran. Allergy testing and venom immunotherapies are carried out with venom components which are expensive, have limited commercial availability, and often lack specificity. Read More

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Diurnal biting of malaria mosquitoes in the Central African Republic indicates residual transmission may be "out of control".

Proc Natl Acad Sci U S A 2022 05 16;119(21):e2104282119. Epub 2022 May 16.

MIVEGEC, Univ. Montpellier, CNRS, IRD, Montpellier, 34394 France; and.

Malaria control interventions target nocturnal feeding of the Anopheles vectors indoors to reduce parasite transmission. Mass deployment of insecticidal bed nets and indoor residual spraying with insecticides, however, may induce mosquitoes to blood-feed at places and at times when humans are not protected. These changes can set a ceiling to the efficacy of these control interventions, resulting in residual malaria transmission. Read More

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History and future perspectives of male aesthetic genital surgery.

Int J Impot Res 2022 May 10;34(4):327-331. Epub 2022 May 10.

Department of Urology, Hospital La Zarzuela, Madrid, Spain.

Since ancient times, men have tried to change the size and shape of their genitals. Bites from insects or poisonous snakes and weights were among the first methods used for this purpose. In the first half of the 1900s, the scientific push regarding male genital aesthetic surgery began. Read More

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Experimental evaluation of a metofluthrin passive emanator against Aedes albopictus.

PLoS One 2022 10;17(5):e0267278. Epub 2022 May 10.

Department of Environmental Sciences, Emory University, Atlanta, GA, United States of America.

Background: With the recent occurrence of locally transmitted Aedes-borne viruses in the continental United States and Europe, and a lack of effective vaccines, new approaches to control Aedes aegypti and Aedes albopictus are needed. In sub-tropical urban settings in the US, Ae. albopictus is a dominant nuisance and arbovirus vector species. Read More

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Bioprospection for new larvicides against Aedes aegypti based on ethnoknowledge from the Amazonian São Sebastião de Marinaú riverside community.

J Ethnopharmacol 2022 Jul 18;293:115284. Epub 2022 Apr 18.

Universidade de Brasília, Laboratório de Farmacognosia, Campus Universitário Darcy Ribeiro, 70910-900, Brasília, DF, Brazil. Electronic address:

Ethnopharmacological Relevance: Vector-borne diseases represent a huge global burden impacting health systems. Aedes aegypti is the main vector of arboviral diseases including dengue, Zika, chikungunya and urban yellow fever in both tropical and subtropical areas. Ethnopharmacological investigations provide potential avenues for developing new vector control strategies. Read More

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Massive cerebral infarct following multiple honeybee stings.

Ceylon Med J 2021 09;66(3):151-153

Department of Medicine, Faculty of Medicine, University of Peradeniya, Sri Lanka.

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September 2021

Reimagining zoonotic malaria control in communities exposed to Plasmodium knowlesi infection.

J Physiol Anthropol 2022 Apr 12;41(1):14. Epub 2022 Apr 12.

Department of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur, Malaysia.

Plasmodium knowlesi malaria infection in humans has been reported throughout southeast Asia. The communities at risk are those living in areas where Macaque monkeys and Anopheles mosquito are present. Zoonotic malaria control is challenging due to the presence of the reservoir host and the possibility of human-vector-human transmission. Read More

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Natural History of the Hymenoptera Venom Sensitivity Reactions in Adults: Study Design.

Int J Environ Res Public Health 2022 04 4;19(7). Epub 2022 Apr 4.

National Institute of Public Health, Centre for Environmental Health, Zaloška 29, 1000 Ljubljana, Slovenia.

Background: Allergic reactions to Hymenoptera stings can have varying levels of severity, according to the Müller grading system.

Methods: By an epidemiological concept, this is a retrospective cohort study. The observed cohort was represented by patients referred to the University Clinic Golnik due to Hymenoptera allergic reaction in the period from 1997 to 2015. Read More

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The knowns and unknowns of the efficacy of neem oil (Azadirachta indica) used as a preventative measure against Leishmania sand fly vectors (Phlebotomus genus).

Prev Vet Med 2022 May 19;202:105618. Epub 2022 Mar 19.

formerly, Istituto Superiore di Sanità, Viale Regina Elena 299, 00161 Rome, Italy.

Since domestic dogs are the main reservoir hosts of Leishmania infantum throughout the world, they are the main focus in terms of controlling zoonotic visceral leishmaniosis. To protect dogs from leishmaniosis, chemical repellents of durable efficacy are available in the form of collars, spot-on and sprays. However, the negative effects of chemical pesticides on the environment are well established as they affect animals and plants. Read More

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Pharmacokinetics of oral moxidectin in individuals with Onchocerca volvulus infection.

PLoS Negl Trop Dis 2022 03 25;16(3):e0010005. Epub 2022 Mar 25.

College of Pharmacy, University of Iowa, Iowa City, Iowa, United States of America.

Background: Onchocerciasis ("river blindness"), is a neglected tropical disease caused by the filarial nematode Onchocerca volvulus and transmitted to humans through repeated bites by infective blackflies of the genus Simulium. Moxidectin was approved by the United States Food and Drug Administration in 2018 for the treatment of onchocerciasis in people at least 12 years of age. The pharmacokinetics of orally administered moxidectin in 18- to 60-year-old men and women infected with Onchocerca volvulus were investigated in a single-center, ivermectin-controlled, double-blind, randomized, single-ascending-dose, ascending severity of infection study in Ghana. Read More

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An inventory of human night-biting mosquitoes and their bionomics in Sumba, Indonesia.

PLoS Negl Trop Dis 2022 03 21;16(3):e0010316. Epub 2022 Mar 21.

Department of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Indiana, United States of America.

Mosquitoes are important vectors that transmit pathogens to human and other vertebrates. Each mosquito species has specific ecological requirements and bionomic traits that impact human exposure to mosquito bites, and hence disease transmission and vector control. A study of human biting mosquitoes and their bionomic characteristics was conducted in West Sumba and Southwest Sumba Districts, Nusa Tenggara Timur Province, Indonesia from May 2015 to April 2018. Read More

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Critical Upper Airway Edema After a Bee Sting to the Uvula.

Wilderness Environ Med 2022 06 15;33(2):236-238. Epub 2022 Mar 15.

Division of Pulmonary and Critical Care Medicine, Lankenau Medical Center, Lankenau Institute for Medical Research, Wynnewood, PA. Electronic address:

Hymenoptera stings of the upper airway are rare events, but can result in rapid, life-threatening airway emergencies. The allergenic and toxic mediators that are released from the stings of bees, wasps, and hornets can cause local tissue inflammation and edema with subsequent upper airway obstruction. We report the case of a 15-y-old girl who suffered a bee sting to the uvula while zip-lining in Costa Rica. Read More

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Origin and status of Culex pipiens mosquito ecotypes.

Curr Biol 2022 03;32(5):R237-R246

Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, USA; Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA. Electronic address:

The northern house mosquito Culex pipiens sensu stricto is one of the most important disease vector mosquitoes in temperate zones across the northern hemisphere, responsible for the emergence of West Nile Virus over the last two decades. It comprises two ecologically distinct forms - an aboveground form, pipiens, diapauses in winter and primarily bites birds, while a belowground form, molestus, thrives year-round in subways, basements and other human-made, belowground habitats, bites mammals, and can even lay eggs without a blood meal. The two forms hybridize in some but not all places, leading to a complex ecological mosaic that complicates predictions of vectorial capacity. Read More

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Variability in human attractiveness to mosquitoes.

Curr Res Parasitol Vector Borne Dis 2021 2;1:100058. Epub 2021 Nov 2.

Laboratório de Imunobiologia e Imunogenética, Programa de Pós-Graduação em Genética e Biologia Molecular - PPGBM, Departamento de Genética, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.

Blood-feeding mosquitoes locate humans spatially by detecting a combination of human-derived chemical signals, including carbon dioxide, lactic acid, and other volatile organic compounds. Mosquitoes use these signals to differentiate humans from other animals. Spatial abiotic factors (e. Read More

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November 2021

Social wasps in Spain: the who and where.

Allergol Immunopathol (Madr) 2022 1;50(2):58-64. Epub 2022 Mar 1.

Allergy Department, Hospital Universitario Reina Sofía, Córdoba, Spain. ARADyAL Spanish Thematic Network and Co-operative Research Centre RD16/0006/0018, Instituto de Salud Carlos III, Madrid; Instituto Maimónides de Investigación Biomédica, Córdoba.

Objective: The objective of this study was to list the social vespids occurring in Spain, determine their presence in each region, and correlate the data with the vespids responsible for allergic reactions and their progression over time.

Methods: Insects distribution data were collected in two phases: from the southern half of Spain (2008-2012), and from the northern half of Spain (2016-2019). Data for the vespids were collected from the prescriptions of Hymenoptera venom immunotherapy (HVIT) at six Spanish hospitals in the years 2009 and 2019. Read More

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Blood-feeding patterns of Anopheles vectors of human malaria in Malawi: implications for malaria transmission and effectiveness of LLIN interventions.

Malar J 2022 Mar 3;21(1):67. Epub 2022 Mar 3.

Department of Entomology, Michigan State University, East Lansing, MI, 48824, USA.

Background: Access to human hosts by Anopheles mosquitoes is a key determinant of vectorial capacity for malaria, but it can be limited by use of long-lasting insecticidal nets (LLINs). In Malawi, pyrethroid-treated LLINs with and without the synergist piperonyl butoxide (PBO) were distributed to control malaria. This study investigated the blood-feeding patterns of malaria vectors and whether LLINs containing pyrethroid and PBO led to a reduction of human blood feeding than those containing only pyrethroids. Read More

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infection increases the exposure and predation endured by .

Parasitology 2022 02 28;149(2):155-160. Epub 2021 Sep 28.

Vector Behavior and Pathogen Interaction Group, Instituto René Rachou, Fundação Oswaldo Cruz-FIOCRUZ, Belo Horizonte, Minas Gerais, Brazil.

Trypanosoma rangeli is a protozoan that infects triatomines and mammals in Latin America, sharing hosts with Trypanosoma cruzi, the etiological agent of Chagas disease. Trypanosoma rangeli does not cause disease to humans but is strongly pathogenic to its invertebrate hosts, increasing mortality rates and affecting bug development and reproductive success. We have previously shown that this parasite is also capable of inducing a general increase in the locomotory activity of its vector Rhodnius prolixus in the absence of host cues. Read More

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February 2022

Increased biting rate and decreased Wolbachia density in irradiated Aedes mosquitoes.

Parasit Vectors 2022 Feb 24;15(1):67. Epub 2022 Feb 24.

Biotechnology and Agroindustry Division, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Casaccia Research Center, Rome, Italy.

Background: Releasing considerable numbers of radiation-sterilized males is a promising strategy to suppress mosquito vectors. However, releases may also include small percentages of biting females, which translate to non-negligible numbers when releases are large. Currently, the effects of irradiation on host-seeking and host-biting behaviors have not been exhaustively investigated. Read More

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February 2022

MiRNA: Biological Regulator in Host-Parasite Interaction during Malaria Infection.

Int J Environ Res Public Health 2022 02 19;19(4). Epub 2022 Feb 19.

Parasite-Host Biology, National Institute of Malaria Research, Dwarka, New Delhi 110077, India.

Malaria is a severe life-threatening disease caused by the bites of parasite-infected female mosquitoes. It remains a significant problem for the most vulnerable children and women. Recent research has helped establish the relationship between microRNAs (miRNAs) and many other diseases. Read More

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February 2022