6,240 results match your criteria Bites Insects

Anthrenus sp. and an Uncommon Cluster of Dermatitis.

Emerg Infect Dis 2021 Jul;27(7):1940-1943

We report patients in their homes in France who had cutaneous lesions caused by Anthrenus sp. larvae during the end of winter and into spring. These lesions mimic bites but are allergic reactions to larvae hairs pegged in the skin. Read More

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Atypical behavior of a black fly species connects cavity-nesting birds with generalist blood parasites in an arid area of Spain.

Parasit Vectors 2021 Jun 3;14(1):298. Epub 2021 Jun 3.

Departamento de Ecología Funcional y Evolutiva, Estación Experimental de Zonas Áridas (EEZA-CSIC), Almería, Spain.

Background: The feeding behavior of bloodsucking insects determines the transmission, distribution, host spectrum and evolution of blood parasites in the wild. Conventional wisdom suggests that some vector groups (e.g. Read More

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Human biting rhythm of Anopheles gambiae Giles, 1902 (Diptera: Culicidae) and sleeping behaviour of pregnant women in a lagoon area in Southern Benin.

BMC Res Notes 2021 May 22;14(1):200. Epub 2021 May 22.

UMR216-MERIT, Institut de Recherche pour le Développement, 75006, Paris, France.

Objective: In the framework of EVALMOUS study aiming to assess the use and effectiveness of mosquito nets by pregnant women and other members of their household in a lagoon area in southern Benin, the behaviour of pregnant women relative to the time they go to bed using the net were recorded. Malaria vectors biting rhythm, Plasmodium falciparum infection and insecticide resistance genes in malaria vectors were also determined.

Results: Overall, 3848 females of Anopheles gambiae s. Read More

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Host Bloodmeal Source Has No Significant Effect on the Fecundity and Subsequent Larval Development Traits of the Progeny in Culicoides furens Poey (Diptera: Ceratopogonidae).

J Med Entomol 2021 May 17. Epub 2021 May 17.

Florida Medical Entomology Laboratory, UF/IFAS, Vero Beach, FL, USA.

Culicoides Latreille species (Diptera: Ceratopogonidae) are insects of significant medical and veterinary importance worldwide because their bites can cause major annoyance, allergic reactions, and/or pathogen transmission to vertebrates, including humans. In this study, we examined the effect of host bloodmeal source on the fecundity and subsequent larval development traits of the progeny of Culicoides furens Poey, a nuisance species in coastal Florida. Field-collected females were fed on two different classes of hosts: birds (chicken) or mammals (human). Read More

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Mite bites, comet signs and possible mammary prosthesis rejection after returning to a vacation home: a diagnostic challenge.

Travel Med Infect Dis 2021 Jul-Aug;42:102077. Epub 2021 May 5.

Department of Internal Medicine and Medical Specialties, Dermatology Unit, Sapienza University of Rome, Rome, Italy.

Pyemotes ventricosus is a free-living mite feeding on larvae or nymphs of insects, including moths, beetles, wasps and bees, that are usually found in grain, straw and firewood. When present in great number or when its food is lacking, it could accidentally bite mammals, including humans, causing a highly pruritic self-limiting dermatitis, sometimes followed by a lymphangitis known as "comet sign".We present a singular case of mite lymphangitis that surrounds and delimitates breast prosthesis in a 30-year-old Caucasian woman. Read More

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The Efficacy of Ultrasonic Pest Repellent Devices against the Australian Paralysis Tick, (Acari: Ixodidae).

Insects 2021 Apr 30;12(5). Epub 2021 Apr 30.

Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.

Ultrasonic pest repellers are often promoted as a means of protecting people and pets from the bites of hematophagous arthropods, such as ticks. However, to date, there has been no published research on the effectiveness of these devices against the Australian paralysis tick, Neumann. The purpose of this study was to test the effectiveness of nine ultrasonic devices against female . Read More

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Triggering the proboscis extension reflex (PER) in Rhodnius prolixus.

J Insect Physiol 2021 May 1;132:104249. Epub 2021 May 1.

Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - University of Tours, Tours, France. Electronic address:

The heat emitted by the host body constitutes a short distance orientation cue for most blood-sucking insects, as is the case of the kissing-bug Rhodnius prolixus. We evaluated here how kissing bugs assess the distance to a warm target, in order to reach it by displaying the Proboscis Extension Reflex (PER). We confronted blind-folded insects to a thermal source either at 35° or at 40 °C under both, open- and closed-loop conditions. Read More

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[Treatment report of three cases of multiple wasp stings].

Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021 Apr;39(4):310-312

Department of Emergency, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.

From September to November 2019, three patients with Hornet stings were admitted to hospital with acute anaphylaxis and various degrees of organ dysfunction. After hemoperfusion combined with continuous hemodialysis and hormone pulse therapy, 1 patient was successfully treated and 2 patients were not cured. Bee Stings can cause systemic allergic reactions and toxic reactions. Read More

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Inaccuracies in Google's Health-Based Knowledge Panels Perpetuate Widespread Misconceptions Involving Infectious Disease Transmission.

Am J Trop Med Hyg 2021 Apr 26. Epub 2021 Apr 26.

2Darnall Medical Library, Walter Reed National Military Medical Center, Bethesda, Maryland.

Google health-based Knowledge Panels were designed to provide users with high-quality basic medical information on a specific condition. However, any errors contained within Knowledge Panels could result in the widespread distribution of inaccurate health information. We explored the potential for inaccuracies to exist within Google's health-based Knowledge Panels by focusing on a single well-studied pathogen, Ebola virus (EBOV). Read More

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Epinephrine Auto-Injection After Allergic Reaction Leading to Gas Gangrene of the Leg.

Am J Case Rep 2021 Apr 21;22:e930889. Epub 2021 Apr 21.

Department of Pharmacy, Mercy Health - St. Elizabeth Youngstown Hospital, Youngstown, OH, USA.

BACKGROUND Clostridial myonecrosis, also known as gas gangrene, is a highly lethal necrotizing soft tissue infection. While commonly associated with trauma, clostridial myonecrosis may be the result of parenteral injection of medications. Epinephrine is the most commonly reported medication leading to gas gangrene. Read More

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Bedbug salivation patterns during hematophagy in the skin of a mammalian host.

J Insect Physiol 2021 May-Jun;131:104235. Epub 2021 Apr 6.

Laboratório de Fisiologia de Insetos Hematófagos, Departamento de Parasitologia/ICB, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. Electronic address:

Cimex lectularius (Hemiptera:Cimicidae) infestations have increased over the past decades in several parts of the world, constituting a major urban pest with no reversion signs. The impact on human health caused by these insects, commonly known as bedbugs, is associated with their obligatory hematophagous habit. Allergies induced by hematophagous arthropod bites are related to the deposition of salivary molecules in the host tissues. Read More

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Microsporidial Stromal Keratitis: Epidemiological Features, Slit-Lamp Biomicroscopic Characteristics, and Therapy.

Cornea 2021 Mar 29. Epub 2021 Mar 29.

Department of Ophthalmology, Baylor College of Medicine, Houston, TX; Houston Eye Associates, Houston, TX; Department of Pathology and Genomic Medicine, Houston Methodist Hospital, Houston, TX; and Departments of Pathology and Laboratory Medicine, and Ophthalmology, Weill Medical College of Cornell University, New York City, NY.

Purpose: Microsporidial stromal keratitis is a rare form of infectious keratitis, with only 7 cases reported in the United States to date. This study was performed to evaluate risk factors, clinical features, and response to therapy.

Methods: A retrospective review of the medical records of all patients diagnosed with microsporidial stromal keratitis seen in the practices of the authors between 1999 and 2020 was performed. Read More

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Simulium (Gomphostilbia) aziruni: First record of a black fly (Diptera: Simuliidae) attracted to a human in Malaysia.

Acta Trop 2021 Jun 26;218:105904. Epub 2021 Mar 26.

Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, Kuala Lumpur 50603, Malaysia.

Most female black flies in the genus Simulium are blood-sucking flies and they can cause various parasitic diseases in human and animal. A total of 94 species of black flies have been reported in Malaysia, however, their biting behavior and role as vector of infectious agents remain understudied. To fill in this knowledge gap, we attempted to survey adult black flies from field populations in Peninsular Malaysia. Read More

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Bienenstich ins Auge!

MMW Fortschr Med 2021 03;163(4):25

FA f. Innere Medizin, München, Deutschland.

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Salivary Protease Inhibitors as Potential Anti-Tick Vaccines.

Front Immunol 2020 4;11:611104. Epub 2021 Feb 4.

Laboratory of Physiology of Hematophagous Insects, Department of Parasitology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.

is the main tick associated with human bites in Brazil and the main vector of , the causative agent of the most severe form of Brazilian spotted fever. Molecules produced in the salivary glands are directly related to feeding success and vector competence. In the present study, we identified sequences of salivary proteins that may be involved in hematophagy and selected three proteins that underwent functional characterization and evaluation as vaccine antigens. Read More

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Indigenous knowledge of Rift Valley Fever among Somali nomadic pastoralists and its implications on public health delivery approaches in Ijara sub-County, North Eastern Kenya.

PLoS Negl Trop Dis 2021 02 22;15(2):e0009166. Epub 2021 Feb 22.

CORAF, Dakar, Senegal.

Rift Valley Fever (RVF) is a zoonotic disease whose outbreak results in heavy economic and public health burdens. In East Africa, RVF is mainly experienced in arid and semi-arid areas predominantly inhabited by the pastoralists. These areas experience sudden, dramatic epidemics of the disease at intervals of approximately 10 years, associated with widespread flooding and the resultant swarms of mosquitoes. Read More

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February 2021

Immune response dynamics and Lutzomyia longipalpis exposure characterize a biosignature of visceral leishmaniasis susceptibility in a canine cohort.

PLoS Negl Trop Dis 2021 02 22;15(2):e0009137. Epub 2021 Feb 22.

Instituto Gonçalo Moniz-Fundação Oswaldo Cruz, Bahia, Brazil.

Background: Reports have shown correlations between the immune response to vector saliva and Leishmaniasis outcome. We followed dogs in an endemic area for two years characterizing resistance or susceptibility to canine visceral leishmaniasis (CVL) according to Leishmania infantum diagnosis and clinical development criteria. Then, we aimed to identify a biosignature based on parasite load, serum biological mediators' interactions, and vector exposure intensity associated with CVL resistance and susceptibility. Read More

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February 2021

Understanding the binding mechanism of succinic acid against phospholipase A from bee venom.

J Biochem Mol Toxicol 2021 Apr 13;35(4):e22715. Epub 2021 Feb 13.

Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, Tamil Nadu, India.

Phospholipase A (PLA ) is responsible for the release of fatty acids from glycerophospholipids. PLA is commonly found in mammalian tissues. It is also found in venom from different animals ranging from insects, arachnid, and snakes. Read More

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[Predictive value of MB isoenzyme of creatine kinase and poisoning severity score in the prognosis of patients with wasp sting].

Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2021 Jan;33(1):105-108

Department of Emergency, the First Affiliated Hospital of Henan University of Science and Technology, Luoyang 471003, Henan, China.

Objective: To explore the predictive value of MB isoenzyme of creatine kinase (CK-MB) and poisoning severity score (PSS) in the clinical prognosis of patients with wasp sting.

Methods: A retrospective study was conducted. The clinical data of patients who were stung by wasps admitted to emergency department of the First Affiliated Hospital of Henan University of Science and Technology from July 2017 to November 2019 were collected. Read More

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January 2021

Clinical manifestation of multiple wasp stings with details of whole transcriptome analysis: Two case reports.

Medicine (Baltimore) 2021 Jan;100(4):e24492

Department of Critical Care Medicine, Taichung Veterans General Hospital.

Introduction: Multiple wasp stings is an emergency result from systemic reactions to the toxin with a wide range of manifestations, and we presented 2 patients with distinct clinical and transcriptomic findings.

Patient Concerns: Two patients without systemic disease presented with nearly 90 painful papules after attacked by a swarm of wasps (Vespa basalis).

Diagnosis: Patient 1 was a 44-year-old healthy male whose clinical manifestations mainly comprised hemolysis, hepatic injury, rhabdomyolysis, and acute kidney injury. Read More

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January 2021

Prevalence of atopic diseases in children with papular urticaria.

Allergol Immunopathol (Madr) 2021 2;49(1):62-67. Epub 2021 Jan 2.

Department of Pediatric Allergy and Immunology, Inonu University, Medical Faculty, Malatya, Turkey.

Background: Papular urticaria is a hypersensitivity reaction characterized by chronic and recurrent papular erythema. It occurs as a result of the bites of mosquitoes, fleas, bed bugs, and other insects; and it is generally seen in children. This study examines the prevalence of atopic diseases in patients with papular urticaria. Read More

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January 2021

Quantifying and characterizing hourly human exposure to malaria vectors bites to address residual malaria transmission during dry and rainy seasons in rural Southwest Burkina Faso.

BMC Public Health 2021 01 30;21(1):251. Epub 2021 Jan 30.

Institut de Recherche en Sciences de la Santé (IRSS), Bobo-Dioulasso, Burkina Faso.

Background: To sustain the efficacy of malaria vector control, the World Health Organization (WHO) recommends the combination of effective tools. Before designing and implementing additional strategies in any setting, it is critical to monitor or predict when and where transmission occurs. However, to date, very few studies have quantified the behavioural interactions between humans and Anopheles vectors in Africa. Read More

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January 2021

Fine-scale distribution of malaria mosquitoes biting or resting outside human dwellings in three low-altitude Tanzanian villages.

PLoS One 2021 28;16(1):e0245750. Epub 2021 Jan 28.

Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom.

Background: While malaria transmission in Africa still happens primarily inside houses, there is a substantial proportion of Anopheles mosquitoes that bite or rest outdoors. This situation may compromise the performance of indoor insecticidal interventions such as insecticide-treated nets (ITNs). This study investigated the distribution of malaria mosquitoes biting or resting outside dwellings in three low-altitude villages in south-eastern Tanzania. Read More

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Variable bites and dynamic populations; new insights in Leishmania transmission.

PLoS Negl Trop Dis 2021 01 25;15(1):e0009033. Epub 2021 Jan 25.

Department of Mathematics, University of York, York, UK.

Leishmaniasis is a neglected tropical disease which kills an estimated 50,000 people each year, with its deadly impact confined mainly to lower to middle income countries. Leishmania parasites are transmitted to human hosts by sand fly vectors during blood feeding. Recent experimental work shows that transmission is modulated by the patchy landscape of infection in the host's skin, and the parasite population dynamics within the vector. Read More

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January 2021

Patterns of human exposure to early evening and outdoor biting mosquitoes and residual malaria transmission in Ethiopia.

Acta Trop 2021 Apr 22;216:105837. Epub 2021 Jan 22.

School of Medical Laboratory Sciences, Faculty of Health Sciences, Jimma University, Jimma, Ethiopia; Tropical and Infectious Diseases Research Center (TIDRC), Jimma University, Jimma, Ethiopia.

Ethiopia has shown a notable progress in reducing malaria burden over the past decade, mainly due to the scaleup of vector control interventions such as long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS). Based on the progress, the country has set goals to eliminate malaria by 2030. However, residual malaria transmission due to early evening and outdoor biting vectors could pose a challenge to malaria elimination efforts. Read More

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Comorbidities and Cofactors of Anaphylaxis in Patients with Moderate to Severe Anaphylaxis. Analysis of Data from the Anaphylaxis Registry for West Pomerania Province, Poland.

Int J Environ Res Public Health 2021 01 5;18(1). Epub 2021 Jan 5.

Clinical Allergology Department, Pomeranian Medical University (PMU) in Szczecin, 70-204 Szczecin, Poland.

Anaphylaxis is a severe, potentially life-threatening systemic hypersensitivity reaction that is still rarely diagnosed. For safety reasons, patients should visit an allergologist to identify potential causes and cofactors of this reaction. This paper presents the analysis of data from the Anaphylaxis Registry gathered over ten years at the Allergy Clinic, Pomeranian Medical University (PMU). Read More

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January 2021

Insecticide-treated house screening protects against Zika-infected Aedes aegypti in Merida, Mexico.

PLoS Negl Trop Dis 2021 01 19;15(1):e0009005. Epub 2021 Jan 19.

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

Background: The integration of house-screening and long-lasting insecticidal nets, known as insecticide-treated screening (ITS), can provide simple, safe, and low-tech Aedes aegypti control. Cluster randomised controlled trials in two endemic localities for Ae. aegypti of south Mexico, showed that ITS conferred both, immediate and sustained (~2 yr) impact on indoor-female Ae. Read More

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January 2021

The Mbam drainage system and onchocerciasis transmission post ivermectin mass drug administration (MDA) campaign, Cameroon.

PLoS Negl Trop Dis 2021 01 19;15(1):e0008926. Epub 2021 Jan 19.

Parasites and Vector Biology Research Unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.

Background: The impact of large scale Mass Drug Adminstration (MDA) of ivermectin on active onchocerciasis transmission by Simulium damnosum, which transmits the parasite O. volvulus is of great importance for onchocerciasis control programmes. We investigated in the Mbam river system area, the impact of MDA of ivermectin on entomological indices and also verify if there are river system factors that could have favoured the transmission of onchocerciasis in this area and contribute to the persistence of disease. Read More

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January 2021

Commentary: Corneal bee sting injury.

Indian J Ophthalmol 2021 02;69(2):426-427

Cornea, Cataract and Refractive Surgery Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.

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February 2021

Endoscopic visualization-assisted corneal bee sting removal.

Indian J Ophthalmol 2021 02;69(2):423-425

Smt Kanuri Santhamma Center for Vitreo-Retinal Diseases, L V Prasad Eye Institute, Hyderabad, Telangana, India.

Purpose: Deeply embedded corneal foreign bodies and intrastromal foreign body removal can often be a challenge. The aim of this report was to describe the utility of endoscopy in visualization and removal of an embedded corneal bee stinger.

Methods: A 44-year-old male patient developed toxic keratopathy after injury from a bee stinger. Read More

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February 2021