External Ophthalmomyiasis which was Caused by Sheep Botfly (Oestrus ovis) Larva: A Report of 10 Cases

Sucilathangam, G.; Meenakshisundaram, A.; Hariramasubramanian, S; Anandhi, D.; Palaniappan, N; Anna, T.

doi:10.7860/jcdr/2013/4749.2817

Cited by 14 publications

(6 citation statements)

References 8 publications

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“…Esta mosca larvípara, coloca las larvas en ojos u hocicos de los animales, desde donde migran a los senos paranasales, alimentándose de secreciones mucosas durante semanas o meses 5 . Posteriormente, son eliminadas junto con las secreciones nasales para formar una pupa en el suelo 3 .…”

Section: Discussionunclassified

“…Existen casos descritos de oftalmomiasis por Oestrus ovis en granjeros y personas indigentes de áreas rurales, que actúan como hospederos accidentales de este parásito 3,5,13 . En el caso presentado, el paciente no refirió contacto con animales ni realizó visitas a zonas rurales.…”

Section: Discussionunclassified

“…La afección ocular por larvas u oftalmomiasis es frecuente en animales, pero de rara ocurrencia en seres humanos. Los factores de riesgo más importantes para su desarrollo son condiciones de higiene deficientes, situación de abandono o indigencia, y contacto cercano con animales o granjas [3][4][5] . A pesar de ello, existen reportes esporádicos de oftalmomiasis en personas sin factores de riesgo o en áreas urbanas 6 .…”

Section: Introductionunclassified

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Oftalmomiasis por Oestrus ovis en un área urbana al sur del Perú

Mamani-Quispe

Moreno-Loaíza

2019

Rev. chil. infectol.

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Oestrus ovis ophthalmomyiasis at an urban area in Southern Peru Ophthalmomyiasis is the ocular infestation by dipterous larvae. It has been described in patients from rural areas, poor hygiene, or contact with animals. However, there are sporadic reports of this infestation in urban areas. We present the case of a young man without risk factors, from an urban area in southern Peru, in whom we found 10 larvae at ocular conjunctiva. The larvae were identified as Oestrus ovis, a fly that usually infests sheep and goats as part of their life cycle. We made a brief review of the case, highlighting the importance of adequately identifying the species that cause myiasis as well as its life cycle.

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Section: Discussionunclassified

Section: Introductionunclassified

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Oftalmomiasis por Oestrus ovis en un área urbana al sur del Perú

Mamani-Quispe

Moreno-Loaíza

2019

Rev. chil. infectol.

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“…The infected sheep may have nasal discharge (seromucous or purulent), continuing sneezing, and dyspnea (6). Zoonosis is considered a health issue caused by O. ovis, which induces a clinical picture in humans who live close to infected ruminants in rural regions, leading to ophthalmomyiasis, respiratory and non-respiratory involvement (7)(8)(9)(10). Oestrosis is found in various areas, and natures of the world are reported from regions, including Asian countries and European and African countries that sit on the Mediterranean coastlines (11).…”

Section: Introductionmentioning

confidence: 99%

Morphological and phylogenetic characterization of Oestrus ovis larvae in sheep: Al-Qadisiyah province, Iraq

Alhayali¹,

Alsaadawi²,

Al-Fatlawi³

et al. 2022

IJVS

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The fly larvae infect the nasal cavities and sinuses (frontal and maxillary) of sheep, goats, and a range of wild ruminants, forming a disease called oestrosis (Nasal myiasis or nasal bot). The disease is one of the significantly diseases for the Iraqi small ruminant industry that causes detrimental economic losses. The current work was carried out to morphologically-and molecularly-characterize O. ovis larvae collected from sheep in a slaughterhouse in Al-Qadisiyah province, Iraq. The study depended on collecting 20 larvae (at different stages) from 20 sheep from 15 October till 17 December 2020. The morphological examination was done using a stereomicroscope and relying on larval characteristic features, including the posterior end, spiracles, and cephalopharyngeal skeleton. The molecular characterization was performed utilizing polymerase chain reaction (PCR) and partial gene sequencing (PGS) methods of the cytochrome c oxidase subunit I (cox1) gene at 700bp and 300-bp regions. Morphologically, the first-stage larvae (L1) showed characteristic mouth hooks, while the second-stage larvae (L2) revealed clear terminal stigmas. For the third-stage larvae (L3), the color of body segments and their spines' were the most important features for this larval stage. The PCR showed amplification at both regions 700bp and 300bp, in 8 and 7 isolates, respectively. The PGS revealed 15 different local isolates in genetic level aligned with isolates from Kyrgyzstan, Italy, Spain, and Turkey. This study shows the important strain differences of O. ovis that infect the local sheep in Al-Qadisiyah province, Iraq.

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“…The hatched larvae cause irritation, and left untreated, the infestation can lead to blindness ( 1 ). The disease is rare and is mainly reported as sporadic cases in pastoral areas where the population is in close contact with common reproductive hosts of the fly, such as sheep and goats in the Middle East ( 2 ), Southeast Asia ( 3 , 4 ), and the Mediterranean Basin ( 5 , 6 ). Only limited ophthalmomyiasis outbreaks have been reported around the Mediterranean Sea ( 7 ).…”

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confidence: 99%