Old World Screwworm myiasis: First report of auricular Chrysomya bezziana myiasis in a dog in Singapore.

A German Shepherd dog was presented to a referral practice for screwworm myiasis affecting the ear. The successful management involved killing the larvae with afoxolaner plus milbemycin oxime and using video otoscopy to completely remove dead larvae. To the best of our knowledge, this is the first case report of auricular myiasis by Chrysomya bezziana in a dog in Singapore and the first report of video otoscopic management of myiasis.

First report of myiasis in dogs caused by Cochliomyia hominivorax (Coquerel 1858) in Colombia.

This paper reports for the first time in Colombia, two myasis cases caused by Cochliomyia hominivorax in stray dogs. Clinical examination of both patients revealed fever and a large wound at the palpebral level on the right side, and multiple perforating wounds in the right posterior limb where larvae were found. The treatment applied was the manual removal of larvae in the dogs, and subsequent eye enucleation in one dog due to the total loss of the upper right eyelid and the severe mechanical damage that the cornea received. Treatment was reinforced with repellents applied around the wounds and antibiotics. This finding of Cochliomyia hominivorax in stray dogs in Colombia raises concerns about the potential of dogs serving as a reservoir for human infection in the region.

Human Chrysomya bezziana myiasis: A systematic review.

BACKGROUND: Myiasis due to Old World screw-worm fly, Chrysomya bezziana, is an important obligate zoonotic disease in the OIE-list of diseases and is found throughout much of Africa, the Indian subcontinent, southeast and east Asia. C. bezziana myiasis causes not only morbidity and death to animals and humans, but also economic losses in the livestock industries. Because of the aggressive and destructive nature of this disease in hosts, we initiated this study to provide a comprehensive understanding of human myiasis caused by C. bezziana. METHODS: We searched the databases in English (PubMed, Embase and African Index Medicus) and Chinese (CNKI, Wanfang, and Duxiu), and international government online reports to 6th February, 2019, to identify studies concerning C. bezziana. Another ten human cases in China and Papua New Guinea that our team had recorded were also included. RESULTS: We retrieved 1,048 reports from which 202 studies were ultimately eligible for inclusion in the present descriptive analyses. Since the first human case due to C. bezziana was reported in 1909, we have summarized 291 cases and found that these cases often occurred in patients with poor hygiene, low socio-economic conditions, old age, and underlying diseases including infections, age-related diseases, and noninfectious chronic diseases. But C. bezziana myiasis appears largely neglected as a serious medical or veterinary condition, with human and animal cases only reported in 16 and 24 countries respectively, despite this fly species being recorded in 44 countries worldwide. CONCLUSION: Our findings indicate that cryptic myiasis cases due to the obligate parasite, C. bezziana, are under-recognized. Through this study on C. bezziana etiology, clinical features, diagnosis, treatment, epidemiology, prevention and control, we call for more vigilance and awareness of the disease from governments, health authorities, clinicians, veterinary workers, nursing homes, and also the general public.

Rara miasis maxilar por Cochliomyia hominivorax. Reporte de caso, actualidad y entomología / A rare maxillary myiasis due to Cochliomyia hominivorax. A case report, update and entomology

La miasis maxilar es un raro padecimiento tropical y endémico de varias zonas del mundo, propio de algunos mamíferos, y el hombre no es la excepción. A continuación presentamos el primer reporte de miasis de este tipo en Ecuador, caracterizamos una masiva invasión larvaria y analizamos casos similares reportados en la literatura médica (AU)

Maxillary myiasis is a rare tropical disease, it is endemic in several areas around the world, and common of some mammals, although humans are not excluded. The first case of maxillary myiasis in Ecuador is presented, as well as a description of the massive larval invasion. Similar cases reported in the medical literature are also reviewed (AU)

A severe case of cutaneous myiasis in São Gonçalo, Brazil, and a simple technique to extract New World screw-worm Cochliomyia hominivorax (Coquerel) (Diptera: Calliphoridae).

This work describes a severe case of myiasis by Cochliomyia hominivorax (Coquerel) in a 59-year-old patient living in an urban area of São Gonçalo, Rio de Janeiro. The patient had an open wound on the right shoulder parasitized by 287 larvae. In order to remove the larvae, the wound was washed with NaCl and solid vaseline was applied onto the wound and covered with gauze and adhesive tape. After 90 min, the larvae were killed by asphyxiation and were removed using sterile forceps and NaCl. This procedure left the wound completely clean.

Myiasis in palate by Cochliomyia hominivorax.

Myiasis is the infestation of tissues and organs of animals and humans caused by the larvae of certain dipteran flies. It is more common in undeveloped and tropical countries and usually affects elderly patients, persons who are sick, and patients with mental illness. Oral myiasis is a rare pathologic condition and a risk to the patient's life because of its great destructive potential. Therefore, appropriate treatment is necessary. This article aimed to report a case of myiasis caused by Cochliomyia hominivorax in the palate of a patient with primary progressive aphasia, which was successfully treated through mechanical removal of larvae plus administration of ivermectin.

Chrysomya bezziana in pet dogs in Hong Kong: a potential threat to Australia.

The Old World Screwworm fly (Chrysomya bezziana) has recently been causing aggressive myiasis in pet dogs in Hong Kong, and the Agriculture, Fisheries and Conservation Department of Hong Kong has confirmed the presence of Chrysomya bezziana in the territory. This report describes screwworm infestation in pet dogs presented for treatment at our clinic in the past year. Screwworm fly larvae were found in typically punched out round wounds or embedded in exposed or neglected wounds. Infested wounds had a characteristic strong offensive smell and oozed a sero-sanguineous exudate or frank blood. Removal of the larvae, wound treatment, continuous monitoring for re-infestation, application of insect repellants and protective housing were essential for successful treatment. Because Hong Kong is a source of pet migration or a transit point to Australia, the fly could threaten Australia.

Miíase nasal: relato de caso / Nasal myiasis: case report

Miíase nasal é a infestação cavitária nasal por larvas de dípteros. Rara em humanos, quando identificada é prevalente em regiões tropicais, na zona rural, tendo como fator predisponente mais freqüente a rinite atrófica. Neste trabalho, descrevemos um caso de miíase nasossinusal e faríngea, e a conduta terapêutica adotada. Observamos que, neste caso, a remoção cirúrgica manual, associada a Ivermectina, foi efetiva

Tratamiento de miasis oral con ivermetina: notificación de tres casos causados por cochliomyia hominivorax (coquerel) / Treatment of oral myiasis with ivermectine: report of three cases caused by Cochliomya Hominivorax (coquerel)

La infestación de tejidos del hombre por larvas de moscas (Miasis) no es frecuente y menos aún en la cavidad oral. Cuando ocurre, se asocia casi siempre con traumas o con lesiones abiertas o sobre infectadas que atraen a las moscas adultas, las cuales depositan allí los huevos, origen de las larvas que ocasionan la parasitosis. El cuadro clínico varía de acuerdo con la localización, la abundancia y estado de desarrollo de las larvas y con la especie de mosca; el manejo clínico y el tratamiento, por lo tanto, son también variados y a veces de difícil ejecución. Cochliomyia hominivorax (Coquerel), especie conocida como "gusano barrenador del ganado" y "gusano devorador de hombres", es uno de los principales agentes en el trópico americano. El tratamiento farmacológico con antiparasitarios de uso veterinario, como ivermectina y creolina, ha demostrado ser eficaz y sin efectos secundarios mayores en los humanos. En este artículo se notifican tres casos nuevos de Miasis oral post traumática, causados por la cochliomyia hominivorax (Coquerel) y tratados con ivermectina (lactona macrocíclica sintética), creolina (mezcla de varios fenoles monovalentes) y el retiro manual de las larvas con resultados positivos, como contribución al conocimiento y manejo de este tipo de Miasis, de escaso registro en la literatura científica especializada.

Miiase da cavidade bucal: consideracoes gerais: a presentacao de casos clínicos e sugestoes para o tratamento / Myiasis of oral cavity: general considerations, report of clinical cases and treatment suggestions

Los autores hacen una revisión bibliográfica y consideraciones generales sobre miiasis como entidad nosológica de escasa ocurrencia en el hombre, se refiere en especial a los casos publicados de localización intraoral, sugieren conducta de tratamiento y presentan tres casos clínicos. Esta invasión de tejidos vivos por larvas de moscas ocurre principlalmente en áreas rurales y particularmente en determinadas personas y situaciones. En individuos tetraplégicos, débiles mentales, seniles, alcohólicos con poca higiene que tienen como factor común mantener la boca abierta durante el día, lo cual facilita la contaminación. Es más frecuente en los animales, especialmente en bovinos con localización preferencial en la región gigivoalveolar. El agente causal más frecuente son las larvas de dípteros (moscas) de la especia Cochliomaja Homnivorax. El tratamiento sugerido es la remoción quirúrgica de las larvas más un prolijo lavado de la zona con suero y con un antiséptico como Hipoclorito de sodio o Tergental al 10 por ciento. De los tres casos clínicos presentados, 2 correspondieron a localización intraoral (surgo gingivodentario vestibular y bóvesa palatina y el tercero en la cavidad nasal