MyMedR

Fulltext A Case Series of Bee Sting Keratopathy With Different Outcomes in Malaysia

Ang WJ, Md Kadir SZ, Fadzillah AJ, Zunaina E

Cureus, 2017 Feb 17;9(2):e1035.

We report three patients with corneal bee sting at our tertiary care center in a three-year period starting from 2014 to 2016. All patients sustained a bee sting injury to the cornea. All patients received early preoperative topical antibiotics, topical cycloplegic and intensive topical steroids. However, the timing of the initial presentation, the duration, and the location of the retained stinger differed in each case leading to different postsurgical outcomes.

Matched MeSH terms: Insect Bites and Stings

Fulltext Isolated Bilateral Pinna Swelling: A Rare Initial Presentation of Leprosy

Yusuf SYM, Ismail IA, Hamid RA, Jamil NA, Yasin MM

Open Access Maced J Med Sci, 2019 Jun 15;7(11):1815-1817.

PMID: 31316665 DOI: 10.3889/oamjms.2019.481

BACKGROUND: Leprosy or Hansen disease is a chronic infectious disease that causes social stigma due to its deforming bodily appearance and physical disability. It has a wide spectrum of presentation affecting diagnosis.

CASE REPORT: A 21-year-old man who presented with chronic isolated bilateral pinna swelling as a result of leprosy is reported. The bilateral pinna swelling started as multiple shiny papules with an erythematous background and progressively became hyperpigmented and lobular over two years. This rare presentation of leprosy poses initial diagnostic difficulties, leading to misdiagnoses by various health care professionals. Diagnoses ascribed include eczema, insect bite and perichondritis. A suspicion of leprosy was raised when hyperaesthetic hypopigmentation of skin started to appear on the body after two years, with worsening of the pinna swellings. This was confirmed by identification of Mycobacterium leprae in slit skin smear test and skin biopsy.

CONCLUSION: Isolated involvement of pinna in a patient without lesions in other body parts is an unusual initial presentation of leprosy. However, leprosy should be kept as a rare differential diagnosis of isolated lesions on the ear in patients not responding to conventional treatment.

Matched MeSH terms: Insect Bites and Stings

Effectiveness of soap formulations containing deet and permethrin as personal protection against outdoor mosquitoes in Malaysia

Yap HH

J Am Mosq Control Assoc, 1986 Mar;2(1):63-7.

PMID: 2906963

Two soap formulations, both containing 20% deet and one each containing permethrin at 0.5 and 1.0%, respectively, were applied to exposed arms and legs of volunteers as personal protection against outdoor human biting mosquitoes in six locations on Penang Island, Malaysia. The predominant mosquito species collected from these locations were Aedes albopictus, Mansonia uniformis, Culex gelidus, Anopheles lesteri and Armigeres subalbatus. Efficacy and residual effects up to 4 hours indicated good protection against these species. Reduction in mosquito landing-biting rates in treated groups ranged from 83.8 to 100.0%. At high densities, small percentages of Ma. uniformis and An. lesteri landed or bit on treated skin. Use of the soap formulations in terms of cost-effectiveness, safety and overall vector control strategy for some tropical diseases is discussed.

Matched MeSH terms: Insect Bites and Stings/prevention & control

STUDIES ON MALAYAN VECTORS OF MALARIA; METHODS OF TRAPPING, AND OBSERVATIONS ON BITING CYCLES

MOORHOUSE DE, WHARTON RH

J Med Entomol, 1965 Jan;1:359-70.

PMID: 14280489

Matched MeSH terms: Insect Bites and Stings*

Fulltext Plasmodium knowlesi and Wuchereria bancrofti: Their Vectors and Challenges for the Future

Vythilingam I

Front Physiol, 2012;3:115.

PMID: 22557977 DOI: 10.3389/fphys.2012.00115

Malaria and filariasis still continue to pose public health problems in developing countries of the tropics. Although plans are in progress for the elimination of both these parasitic vector borne diseases, we are now faced with a daunting challenge as we have a fifth species, Plasmodium knowlesi a simian malaria parasite affecting humans. Similarly in peninsular Malaysia, filariasis was mainly due to Brugia malayi. However, we now see cases of Wuchereria bancrofti in immigrant workers coming into the country. In order to successfully eliminate both these diseases we need to know the vectors involved and introduce appropriate control measures to prevent the diseases occurring in the future. As for knowlesi malaria it is still uncertain if human to human transmission through mosquito bites is occurring. However, P. knowlesi in human is not a rare occurrence anymore and has all the characteristics of a pathogen spreading due to changes in the ecosystem, international travel, and cross border migration. This has created a more complex situation. In order to overcome these challenges we need to revamp our control measures. This paper reviews the vectors of malaria and filariasis in Southeast Asia with special emphasis on P. knowlesi and W. bancrofti in Malaysia and their control strategies.

Matched MeSH terms: Insect Bites and Stings

Kounis syndrome following solenopsis (fire ant) bite

Ng BH, Tan HX, Vijayasingham S

Med J Malaysia, 2019 08;74(4):344-346.

PMID: 31424048

Anaphylaxis is rarely associated with the vasospastic acute coronary syndrome with or without the presence of underlying coronary artery disease. We report here a case of Kounis syndrome in a man with no known cardiovascular risk developed acute ST-elevation myocardial infarction complicated with complete heart block following Solenopsis (fire ant) bite.

Matched MeSH terms: Insect Bites and Stings/complications*

A comparative longitudinal study of bovine trypanosomiasis in tsetse-free and tsetse-infested zones of the Amhara Region, northwest Ethiopia

Cherenet T, Sani RA, Speybroeck N, Panandam JM, Nadzr S, Van den Bossche P

Vet Parasitol, 2006 Sep 10;140(3-4):251-8.

PMID: 16675127

A study was conducted to determine the incidence of trypanosome infections in cattle in tsetse-free and tsetse-infested zones of the Amhara Region of northwest Ethiopia. A total of six sentinel herds were established and the cattle observed during a period of 8 consecutive months. The prevalence of seropositive cattle was high in both the tsetse-free and tsetse-infested zones. The average monthly incidence of trypanosome infection, determined using molecular diagnostic tools, was 20.9% and 25.7% in the tsetse-free and the tsetse-infested zones, respectively. In the tsetse-free, Trypanosoma vivax was responsible for 90.9% of the cattle trypanosome infections. In the tsetse-infested zone, Trypanosoma congolense and T. vivax contributed almost equally to the trypanosome infections in cattle. Trypanosome infection, regardless of species, resulted in anaemia as evidenced by a significant decrease in the packed cell volume of the infected animal. The outcome of this longitudinal study suggests that control of trypanosomiasis in the Amhara Region cannot be achieved by tsetse control alone. Supplemental measures to include drug therapy and biting fly control are discussed.

Matched MeSH terms: Insect Bites and Stings/prevention & control; Insect Bites and Stings/veterinary

Efficacy and safety of topical Trikatu preparation in, relieving mosquito bite reactions: a randomized controlled trial

Maenthaisong R, Chaiyakunapruk N, Tiyaboonchai W, Tawatsin A, Rojanawiwat A, Thavara U

Complement Ther Med, 2014 Feb;22(1):34-9.

PMID: 24559814 DOI: 10.1016/j.ctim.2013.08.014

INTRODUCTION: Trikatu is composed of dried fruits of Piper nigrum L and Piper retrofractum Vahl, and dried rhizomes of Zingiber officinale R. Although this preparation has been used to relieve pruritis, pain, and inflammation for a long time, there is no clinical evidence to confirm its efficacy and safety. Therefore, we performed a double-blind, within person-randomized controlled study of 30 healthy volunteers to determine efficacy and safety of topical Trikatu on mosquito bite reactions.
METHODS: All subjects were bitten by Aedes aegypti laboratory mosquitoes on their forearms and they were randomly assigned arms to apply either Trikatu or reference product on the mosquito bite papule. The main outcome was the difference of papule size reduction at 30 min, measured by a caliper, between the Trikatu and reference arms. Pruritis, redness, pain, and patient satisfaction were assessed at 15, 30, 60, 180, and 360 min as secondary outcomes.
RESULTS: There were no significant differences between treatment and reference arms on any outcome at any time of measurement.
CONCLUSION: Trikatu did not show additional effects for relieving mosquito bite reaction as compared with the reference product containing camphor, menthol, and eucalyptus. For further study, it is very important to consider a proper selection of subjects, comparator product, and concentration of extract when Trikatu preparation is investigated.
KEYWORDS: Eucalyptus oil; Mosquito bite; Mosquito bite symptoms; Papule size reduction; Trikatu preparation

Matched MeSH terms: Insect Bites and Stings/drug therapy*; Insect Bites and Stings/epidemiology; Insect Bites and Stings/physiopathology

Acute renal failure following multiple wasp stings

Thiruventhiran T, Goh BL, Leong CL, Cheah PL, Looi LM, Tan SY

Nephrol Dial Transplant, 1999 Jan;14(1):214-7.

PMID: 10052513

Matched MeSH terms: Insect Bites and Stings/complications*

Fulltext Acute renal failure and posterior reversible encephalopathy syndrome following multiple wasp stings: a case report

Loh HH, Tan CHH

Med J Malaysia, 2012 Feb;67(1):133-5.

PMID: 22582570 MyJurnal

Wasp stings can present in various ways, ranging from mild self-limiting illness to severe multi organ failure with a potentially fatal outcome. We report a case of multiple wasp stings leading to acute renal failure needing prolonged dialysis support and posterior reversible encephalopathy syndrome.

Matched MeSH terms: Insect Bites and Stings/complications*

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

Izwan-Anas N, Ya'cob Z, Low VL, Lourdes EY, Ramli R, Bolongan G, et al.

Acta Trop, 2021 Jun;218:105904.

PMID: 33775626 DOI: 10.1016/j.actatropica.2021.105904

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. In a survey carried out in 2017 at Tasik Kenyir, Terengganu, three females were caught while attracted and landed on human skin. Further morphological and molecular analyses showed that the specimens were identical to Simulium (Gomphostilbia) aziruni Takaoka, Hashim & Chen of the Simulium gombakense species-group. This is the first report on a black fly species attracted to human in Malaysia which serves as a steppingstone towards in-depth studies for black flies in this region.

Matched MeSH terms: Insect Bites and Stings

Fulltext Bionomics of Anopheles latens in Kapit, Sarawak, Malaysian Borneo in relation to the transmission of zoonotic simian malaria parasite Plasmodium knowlesi

Tan CH, Vythilingam I, Matusop A, Chan ST, Singh B

Malar J, 2008;7:52.

PMID: 18377652 DOI: 10.1186/1475-2875-7-52

A large focus of human infections with Plasmodium knowlesi, a simian parasite naturally found in long-tailed and pig-tailed macaques was discovered in the Kapit Division of Sarawak, Malaysian Borneo. A study was initiated to identify the vectors of malaria, to elucidate where transmission is taking place and to understand the bionomics of the vectors in Kapit.

Matched MeSH terms: Insect Bites and Stings

Fulltext Dataset on the diversity and distribution of biting flies collected from cattle farms in Peninsular Malaysia

Ola-Fadunsin SD, Gimba FI, Abdullah DA, Jesse Abdullah FF, Sani RA

Data Brief, 2020 Apr;29:105315.

PMID: 32140522 DOI: 10.1016/j.dib.2020.105315

This dataset investigated the diversity, the geographic and spatial distribution of haematophagous flies collected from cattle farms in Peninsular Malaysia. Biting flies were trapped from 25 cattle farms over a one-year period. One-way Analysis of Variance (ANOVA) was used to establish the presence/absence of statistical differences in the number of flies caught in relation to the different geographic distributions (zones). Three thousand eight hundred and eighty-nine haematophagous flies comprising of 36 different species, including Musca species (3189; 82.0%), Stomoxys species (588; 15.1%), Tabanus species (58; 1.5%), Chrysops species (19; 0.5%), Haematopota javana (3; 0.1%), Haematobosca species (29; 0.7%) and Haematobia exigua (3; 0.1%) were collected using three different types of fly traps. More biting flies were trapped in the southwest (1070; 27.5%) and south (1045; 26.9%) zones compared to other arbitrary zones of Peninsular Malaysia. Haematophagous flies were spatially distributed both in the inland and coastal parts of the country. The difference in the catch of Stomoxys species within zones was not significant (F = 1.299; df = 5; p = 0.306), although it was highest in the southwest zone. The number of Musca species caught was highest in the south zone compared to other zones, the differences was not significant (F = 0.770; df = 5; p = 0.583). Tabanidae fly species were most abundant in the southwest zone, the differences among zones was not significant (F = 1.179; df = 5; p = 0.356).

Matched MeSH terms: Insect Bites and Stings

Studies of phlebotomine sand fly (Diptera: Psychodidae) populations in limestone areas and caves of western Malaysia

Shahar MK, Hassan AA, Lee HL, Salmah MR

Southeast Asian J. Trop. Med. Public Health, 2011 Jan;42(1):83-93.

PMID: 21323169

Phlebotomine sand flies were collected using CO2 baited CDC light trap in 2000 and 2001 in limestone areas and caves of western Malaysia. A total of 1,548 specimens were collected comprising 18 species from two genera: Phlebotomus (6 spp) and Sergentomyia (12 spp). Phlebotomus major major (38.9%) was the predominant species followed by Sergentomyia perturbans (20.1%), P. stantoni (15.3%) and others. Biting activity of the sand flies at the Gua Senyum caves, Gua Kota Gelanggi, Batu caves and Gua Kelam were observed using the bare leg landing catch (BLC) technique. Four Phlebotomus spp at Gua Senyum were found to bite humans with a unimodal biting peak (between 01:00 and 04:00 AM). At Gua Kota Gelanggi P. major major was observed to bite humans, but at Batu Caves and Gua Kelam no sand flies were observed to bite humans. Sergentomyia spp did not feed on humans even though high numbers were caught in light traps. The populations of phleobotomine sand flies fluctuated, with several peaks especially among P. major major which peaked in December and was low in February and August. Phlebotomus stantoni was abundant throughout 2001. Most species populations were weakly related to rainfall because they inhabited caves.

Matched MeSH terms: Insect Bites and Stings/parasitology

Field efficacy of a new repellent, KBR 3023, against Aedes albopictus (SKUSE) and Culex quinquefasciatus (SAY) in a tropical environment

Yap HH, Jahangir K, Chong AS, Adanan CR, Chong NL, Malik YA, et al.

J Vector Ecol, 1998 Jun;23(1):62-8.

PMID: 9673931

Two new repellent formulations, KBR 3023 10% and 20% from Bayer AG, Germany, were evaluated together with DEET 10% and 20% as standard repellent formulations. Evaluation was based on two separate field studies: a daytime study (0900-1700 hr) in a forested orchard on Penang Island and a nighttime study (2100-0100 hr) in a squatter residential area on the adjacent mainland of peninsular Malaysia. Both studies were carried out by exposing humans with bare arms and legs to mosquitoes landing/biting for an eight hour period. Right arms and legs of the human baits were treated with different repellent formulations (KBR 3023 10%, 20% and DEET 10%, 20%) and the left limbs were left untreated to act as controls. The daytime study indicated that all four formulations were equally effective (P < 0.05) as repellents against the predominant Aedes albopictus with greater than 88.5% reduction in landing/biting in the first four hours and not less than 65.0% in the next four hours of the assessment period. In the night study, all four formulations were also found to be equally effective (P < 0.05) in repelling Culex quinquefasciatus, the predominant species. All four formulations provided complete protection against Cx. quinquefasciatus in the first two hours of exposure. The percentage reduction values were maintained above 90.0% for the next six hours of the assessment period. In conclusion, both the KBR 3023 and DEET formulations were found to be equally effective (P < 0.05) in providing a long-lasting reduction in human-mosquito contact in both the day and night field studies.

Matched MeSH terms: Insect Bites and Stings/prevention & control*

Who is biting you? DNA barcodes reveal cryptic diversity in human-biting black flies (Diptera: Simuliidae)

Jomkumsing P, Tangkawanit U, Wongpakam K, Pramual P

Acta Trop, 2019 Aug;196:22-29.

PMID: 31059708 DOI: 10.1016/j.actatropica.2019.05.001

Black flies (Simuliidae) are important biting insects and vectors of diseases agents of humans and livestock. Thus, understanding the taxonomy and biodiversity of these insects is crucial for control and management of these diseases. In this study, we used mitochondrial cytochrome c oxidase I sequences to examine genetic diversity of three human-biting and possible vector black fly taxa; the Simulium asakoae species-complex, S. chamlongi and S. nigrogilvum. High levels of genetic diversity (>3.5% intraspecific genetic divergence) were found in all three taxa. Phylogenetic analyses indicated that the S. asakoae complex can be divided into seven groups with the largest group consisting of specimens from Thailand, Malaysia and Myanmar. This group most likely represents true S. asakoae. The remaining haplotypes formed groups with conspecific haplotypes or with other closely related species. Among these groups, one including S. monglaense and another including S. myanmarense suggest that certain specimens identified as S. asakoae most likely belong to those species. Therefore, they constitute new locality records for Thailand and also represent new records of anthropophily. Members of S. chamlongi are not monophyletic as its clade also included S. hackeri. A median joining network revealed strong geographic associations of the haplotypes of S. nigrogilvum suggesting limitation of gene flow. Because this species occurs mainly in high elevation habitats, low land areas could present a barrier to gene flow.

Matched MeSH terms: Insect Bites and Stings*

Fulltext Blood meal analysis of tabanid fly after it biting the rare Sumatran rhinoceros

Rovie-Ryan JJ, Zainuddin ZZ, Marni W, Ahmad AH, Ambu LN, Payne J

Asian Pac J Trop Biomed, 2013 Feb;3(2):95-9.

PMID: 23593586 DOI: 10.1016/S2221-1691(13)60031-3

To demonstrate a noninvasive large mammalian genetic sampling method using blood meal obtained from a tabanid fly.

Matched MeSH terms: Insect Bites and Stings/blood; Insect Bites and Stings/veterinary*

Fulltext Notes on some ectoparasites received by the Medical Entomology Unit, Institute for Medical Research

Lee HL, Krishnasamy M, Jeffery J, Paramasvaran S

Trop Biomed, 2006 Jun;23(1):131-2.

PMID: 17041562 MyJurnal

There were a spate of recent complaints of insect bites and the entomological specimens received from various sources were identified to be those of cat flea (Ctenocephalides felis) and rat flea (Xenopsylla cheopis), the tropical bed-bug (Cimex hemipterus) and the dog louse (Heterodoxus spiniger). Only the fleas and the bed-bug are known to attack humans.

Matched MeSH terms: Insect Bites and Stings

Travellers with type 1 diabetes: questionnaire development and descriptive analysis of knowledge and practices

Flaherty GT, Leong SW, Finn Y, Sulaiman LH, Noone C

J Travel Med, 2020 Sep 26;27(6).

PMID: 32634210 DOI: 10.1093/jtm/taaa110

BACKGROUND: Little is known about the awareness of travellers with diabetes about the health effects of international travel. This study aimed to design and validate a questionnaire to examine the travel health knowledge, attitudes and practices of people living with type 1 diabetes.

METHODS: A set of 74 items based on a conceptual framework analysis underwent revision and its content validity was established. Items were grouped into three domains. A development study was conducted to establish evidence regarding their factorial structure. A construct validation study was then conducted in which the retained items were tested in an independent sample using confirmatory factor analysis (CFA).

RESULTS: Four factors emerged from our development study and were labelled as pre-travel preparation-insect bites, pre-travel preparation-consultation, insulin and glycaemic control and travel risk behaviour. A CFA confirmed the factorial structure identified in the development study in an independent sample. Each factor loading had a significant (P

Matched MeSH terms: Insect Bites and Stings

Fulltext Acute lymphangitis in a preschool child: a case report

Loh, Huai Seng

International e-Journal of Science, Medicine & Education, 2012;6(2):46-48.

MyJurnal

A 3-year old preschool boy presented with a pruritic red streak at the dorsum of his right foot traveling
upward from the affected site which was red and swollen. Insect sting was the more likely trigger which had caused the cellulitis and subsequently the acute lymphangitis.

Matched MeSH terms: Insect Bites and Stings

Displaying publications 1 - 20 of 42 in total