It is widespread in the tropical and subtropical parts of the ethiopian, orien tal, and parts of the australasian region, including new guinea. Myiasis due to old world screwworm fly, chrysomya bezziana, is an important obligate zoonotic disease in the oielist of diseases and is found throughout much of africa, the indian subcontinent, southeast and east asia. Oral myiais is the rarest form of this rare disease to occur and may be occasionally encountered in developing third world countries owing to poor hygiene due inadequate sanitation amenities. In the case of humans, the infestation sites are mainly the mouth, limbs. It is necessary to explain the reasons for which ivermectin was used. Chrysomya bezziana infestation in a neglected squamous. This limitation is due in part to the difficulty of maintaining this species in a colony outside of using a living host. Resolutions passed by the international committee and recommendations issued by the regional commissions instructed the oie headquarters to establish a single oie list of notifiable terrestrial and aquatic animal diseases to replace the former lists a and b the aim in drawing up a single list was to be in. Chrysomya bezziana chrysomya bezziana infestation infestation in. Chrysomya bezziana infestation in a neglected squamous cell. This is to our knowledge the first case report of an obligate parasite chrysomya bezziana infestation of the tracheostoma from india. Due to discovered 2nd larvae stage and duration of hospitalization, this infestation was identified as nasal myiasis.
Pa thology of old world screwworm fly infestations in cattle. It is an obligate ectoparasite and one of the causative agents of myiasis. We hereby report a rare case of oral myiasis in a 70yearold. Only a few cases of myiasis have been reported in malaysia but this could. It is more common in tropical and subtropical countries. Infestation of chrysomya bezziana in cancerous wounds is very rare and most of the. Chrysomya bezziana is an obligatory parasite and requires living animal tissue for larval development. Geographical distribution of species chrysomya bezziana and myiasis caused advertisement. Human extensive head skin myiasis tehran university of. Dec 23, 2014 ocular myiasis caused by chrysomya bezziana a case report amit s nene, anoop mishra, purnima dhand department of ophthalmology, assam medical college and hospital, dibrugarh, assam, india abstract. Myiasis, screwworm, chrysomya bezziana, breast carcinoma, female, diptera, carcinoma, lobular complications diagnosis secondary surgery, breast. A second species, chrysomya rufifacies, is a predator of primary parasites and was once used as a treatment for osteomyelitis. The dreadful feelings of patients suffering from myiases with severe tissue and bone destruction, even death, and the enormous economic losses in the livestock industries have been described previously. Two experiments were undertaken to describe the clinical and pathological effects in cattle of larval infestation of the old world screwworm fly, chrysomya bezziana.
Feeding activity of the larvae may cause serious tissue damage, resulting in loss of condition, injury to the skinhide, secondary invasion and death. All structured data from the file and property namespaces is available under the creative commons cc0 license. The species was confirmed to be chrysomya bezziana. Pathology of old world screwworm fly infestations in cattle. Proper wound exploration and en masse removal of all the larvae using thorough wound debridement can eradicate the infestation and promote. The term old world blow fly is a derivative of both the associated family, calliphoridae blow flies, and the belief that the genus chrysomya originated in asia and migrated to north america only. Chrysomya bezziana villeneuve is the most important fly, which produces myiasis, exists as an obligate ectoparasite in the animals, and afflicts human. Chrysomya bezziana is a causative agent of obligatory myiasis. Medical and veterinary entomology 1989 3, 273280 ciesin. Myiasis is the infestation of the skin and mucous membranes by fly larvae. Reza yaghoobi department of dermatology, emam khomeini hospital, 635, ahwaz, p.
This report describes screwworm infestation in pet dogs presented for treatment at our clinic in the past year. Clinically, intermittent irritation and pyrexia were present. Oral myiasis is a rare pathology and is associated with poor oral hygiene, alcoholism, senility, suppurating lesions, and severe halitosis. Wound or traumatic myiasis is the infestation of animal and human orifices or wounds by dipterous larvae. Prophylactic and therapeutic efficacy of australian. Author summary chrysomya bezziana larvae are characterized by feeding. Files are available under licenses specified on their description page. Cutaneous myiasis caused by the old world screwworm fly, chrysomya bezziana, is a commonly occurring infestation of livestock and man in southeast asian and african countries.
The first human case of myiasis in malaysia was reported by reid 1953 from a great toe of a patient in malacca. Case report a case of secondary ophthalmomyiasis caused. Nasal nosocomial myiasis infection caused by chrysomya. Chrysomya bezziana infestation in a neglected squamous cell carcinoma on the face article pdf available in indian journal of dermatology, venereology and leprology 751. Characteristics of chrysomya bezziana chrysomya bezziana is from the calliphoridae family and suborder cyclorrhapha, also named as screwworm fly of the old world. Effect of temperature and tissue type on the development of. Proper wound exploration and en masse removal of all the larvae using thorough wound debridement can eradicate the infestation and promote wound healing. Download citation chryzomya bezziana infestation chrysomya bezziana, one of the parasites causing myiasis, exists as an obligate ectoparasite in. A total of about 100 larvae were extracted during 24 h and identified as third larval instar of the blowfly chrysomya bezziana. This page was last edited on 3 september 2017, at 04. Full text ocular myiasis caused by chrysomya bezziana a. This is one of the worlds most important producers of myiasis in man and domestic animals. Myiasis is a pathogenic condition found in live humans and animals caused by various species of dipteran larvae zumpt, 1965. Chrysomya bezziana is a major agent of wound myiasis throughout the tropical regions of.
Myiasis due to old world screwworm fly, chrysomya bezziana, is an. Myiasis is defined as a condition in which maggots are from certain fly species that utilize living, dead, or necrotic tissue from the host as a feed source for their growth and development and attack all types of vertebrate animals that are warmblooded including humans. Description the larvae of old world screwworm fly owsf chrysomya bezziana and new world screwworm fly nwsf cochliomyia hominivorax, can be easily confused with each other and with the larvae of other agents of myiasis. Dogs in the city have been reported to suffer from c. Cutaneous myiasis in a patient with seborrhoeic eczema. Thirtyseven extracted larvae were transferred to medical entomology lab by vial 70% ethanol and 5 live larvae for rearing. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Case report a case of secondary ophthalmomyiasis caused by. Oral myiasis a case report semantic scholar mafiadoc. A buffalo, aged five years was presented with traumatic wound in the abnormal growth at the base of tail, housing maggots in it. Chrysomya bezziana, also known as the old world screwworm fly or screwworm, is an obligate parasite of mammals. A significant loss in body weight occurred in infested animals. Feb 01, 2005 oral and cutaneous myiases caused by chrysomya bezziana oral and cutaneous myiases caused by chrysomya bezziana chan, tai.
Based on morphological features, the collected larvae were identified as c. Author summary chrysomya bezziana larvae are characterized by feeding aggressively on the living tissues and body fluids of the host. Chrysomya bezziana veterinary and forensic entomology at. Pdf chrysomya bezziana infestation in a neglected squamous cell. It is mostly reported in developing countries and in the tropics. Oral and cutaneous myiases caused by chrysomya bezziana oral and cutaneous myiases caused by chrysomya bezziana chan, tai. We report a case of tracheostomal myiasis in an elderly male. The adult can be identified as metallic green or blue with a yellow face. This is to our knowledge the first case report of an obligate parasite chrysomya bezziana. Chrysomya bezziana is distributed widely in southeast asia, new guinea, and africa. We hereby report a rare case of oral myiasis in a 70yearold female. Nine genera belonging to the families calliphoridae, sarcophagidae and muscidae are considered in some detail. Chrysomya bezziana villeneuve chrysomyia bezziana villeneuve, 1914, rev.
Calliphoridae cases as a causative agent of myiasis in 18 and 87 yearold men in two different regions in fars province. Myiasis of the lower extremity caused by chrysomya bezziana is rarely fatal, but it can be associated with considerable morbidity. One species, chrysomya albiceps, feeds on only diseased tissue of a host. Download citation chryzomya bezziana infestation chrysomya bezziana, one of the parasites causing myiasis, exists as an obligate ectoparasite in the animals and afflicts humans. Chrysomya bezziana belongs to the genus chrysomya, which contains species like chrysomya rufifacies and chrysomya putoria. Named to honor the italian entomologist mario bezzi, this fly is widely distributed in asia, tropical africa, india, and papua new guinea. Another species, chrysomya bezziana, is one of the most important causes of myiasis in the old world.
First report of pharyngostomy wound myiasis caused by. Larvae feeding on the skin and underlying tissues of the host cause wound or traumatic myiasis, which can be fatal. Cutaneous myiasis is a common infestation by dipterous larvae of mainly tropical taxa. Unusual cases of human myiasis due to old world screwworm fly. We report the first case of human infestation of chrysomya bezziana in hong kong in an 89yearold woman who had previously had a stroke. Fly species that have previously been reported as involved in myiasis in thailand included the blow fly chrysomya bezziana villeneuve papasarathorn and piyarasana 1962. Resolutions passed by the international committee and recommendations issued by the regional commissions instructed the oie headquarters to establish a single oie list of notifiable terrestrial and aquatic animal diseases to replace the former lists a and b. Chrysomya bezziana, cutaneous myiasis, iran introduction myiasis is a parasitic infestation that results from an infestation of the tissues or organs of live humans or vertebrate animals by the larvae of dipterous flies 1. All warmblooded terrestrial animals are susceptible to chrysomya bezziana, including humans, birds, wildlife and livestock. A rare infestation of the breast, the breast journal on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Chrysomya bezziana an overview sciencedirect topics.
After precise investigation by aid of light microscopy, the larvae were identified as chrysomya bezziana. Childhood mental and physical disability due to congenital or acquired causes is the main predisposing condition for oral myiasis. Full text ocular myiasis caused by chrysomya bezziana. Myiasis is defined as the infestation of live vertebrate animals with dipterous larvae which, for a certain period, feed on the hosts dead or living tissues, body fluids, or ingested food. The species which had infested the stoma was identified as chrysomya bezziana, an obligate parasite. Ocular myiasis caused by chrysomya bezziana a case report amit s nene, anoop mishra, purnima dhand department of ophthalmology, assam medical college and hospital, dibrugarh, assam, india abstract. Description the larvae of old world screwworm fly owsf chrysomya bezziana and new world screwworm fly nwsf cochliomyia hominivorax, can be easily confused with each other and with the. Obligate parasitic flies require a host to complete their development. Human myiasis is a rare infestation that can occur in any part of the world, but. New world screwworm fly nws cochliomyia hominivorax. Ophthalmomyiasis can have variable presentation depending on the type of fly, structures involved, and level of penetration. The first documented case of human myiasis in malaysia was by reid of a male who had an ulcer on his big toe infested with the green bottle, chrysomya bezziana. Chrysomya bezziana, also known as the old world screwworm fly or screwworm, is an obligate. This study describes the existence of chrysomya bezziana diptera.
Citeseerx chrysomya bezziana villeneuve, 1914 diptera. Oral myiasis caused by chrysomya bezziana in anterior maxilla. Myiasis in cancerous wounds occurs as a complication. Chrysomya bezziana villeneuve is the major human myiasis producer in tropical countries, including sri lanka. Chrysomya bezziana infestation infestation in a neglected squamous cell carcinoma on the face. Infested wounds range from mere thorn scratches or insect and tick bite marks to gaping lacerations. All wounds on domestic animals should be properly dressed, and all elective surgical procedures avoided during the fly season. Human infestation is uncommon, but may occur with outbreaks in dogs, pigs and cattle in rural areas godd ard 2003.
It arises from invasion of body tissues or cavities of living animals by maggots or larvae of certain dipterian flies. Chrysomya spp primarily cause myiasis, with females laying egss in open wounds. Myiasis of the foot and leg caused by chrysomya bezziana. Although of great medical and veterinary importance, only a single study has been published on the development of c. Screwworm fly is an insect pest of warm blooded animals including people, livestock and wildlife. The genus chrysomya contains a number of species including chrysomya rufifacies and chrysomya megacephala. Oral and cutaneous myiases caused by chrysomya bezziana.
Occurrence of chrysomya bezziana in a buffalo in jammu. Effect of temperature and tissue type on the development. The old world screwworm fly, chrysomya bezziana villeneuve, is an obligate parasite that poses a major threat to much of the worlds livestock. Poor hygiene and working in contaminated areas particularly during warm seasons provide a situation to infest by this parasite. Chrysomya bezziana infestation in a neglected squamous cell carcinoma on the face reza yaghoobi, nooshin bagherani department of dermatology, jondi shapour university of medical sciences, ahwaz, iran. Management procedures include both prevention of colonization of the fly and treatment of a current infestation. The authors present an interesting case of ulcerative breast carcinoma with chrysomya bezziana infestation.
Chrysomya is an old world blow fly genus of the family calliphoridae. To determine the prophylactic and therapeutic efficacy of australian. Chrysomya bezziana is an obligatory myiasiscausing fly species commonly infesting human and farm animals mainly in tropical and subtropical countries. Chrysomya bezziana was recorded as the responsible species for all three cases. The three major species of obligate parasites encountered in wound myiasis are the new world screwworm, cochliomyia hominivorax, the old world screwworm, chrysomya bezziana, and wohlfahrts wound myiasis fly, wohlfahrtia magnifica. Abstract myiasis is a rare dipteria larvae parasitic infestation arising in humans or animals which can invade different parts of the body. We report the first case of human infestation of chrysomya bezziana in hong kong in an 89yearold woman who had previously had a.
Chrysomya bezziana belongs to calliphoridae family and suborder brachycera suborder cyclorrhapha, also named as screw worm of the old world c hemongesnielsen 2008. Chrysomya bezziana infestation in a neglected squamous cell carcinoma on the face. Oral myiasis due to chrysomya bezziana is a very rare type of human myiasis. Oielisted diseases, infections and infestations in force in 2020.
882 818 648 1241 803 891 1001 182 1244 1287 42 1252 1285 1241 284 803 1126 612 554 1122 1130 736 639 16 1162 534 487 1365 1471 1396 1330 7 1096 630 1334 639 914 804