Ophthalmomyiasis Caused by Chrysomya bezziana after Periocular Carcinoma.

We treated a homeless man in Iran with a history of squamous cell carcinoma who had ophthalmomyiasis caused by Chrysomya bezziana parasites. This case highlights a much-neglected condition and describes measures to prevent it.

Oral myiasis caused by the screwworm Cochliomyia hominivorax treated with subcutaneous ivermectin and creolin: report of six cases after trauma.

Human myiasis is a rare condition that is more common in regions with a warm and humid climate. The larvae involved in myiasis are voracious; they destroy healthy tissues and may cause serious haemorrhage. The condition can be life threatening. Six patients with craniofacial trauma and oral myiasis are reported. The diagnoses were made after larvae had been extracted. Treatment consisted of subcutaneous ivermectin therapy and the application of a phenol preparation (10% creolin) as a local measure for the control of larvae. After 12 (±1) days of hospitalization, no larvae remained in the patients' mouths and the patients were discharged. The laboratory identified the larvae as those of the fly Cochliomyia hominivorax. Healing was uneventful in the six cases presented, and no undesirable reactions were observed throughout the period of treatment. Although the usual treatment for myiasis involves surgical removal of the maggots, pharmacological therapies are emerging as effective alternatives.

Unusual cases of human myiasis due to Old World screwworm fly acquired indoors in Hong Kong.

Myiasis is the infestation of tissue by the larvae of flies. We report eight cases of human myiasis in Hong Kong. All patients were nursing home residents with an average age of 81.8 years. Seven patients were bedridden with advanced dementia. Four patients had pre-existing wounds. Five had poor oral hygiene and four of those were on tube feeding. All of the five patients with poor oral hygiene suffered from oral myiasis. Two patients had vaginal infestations and one had wound myiasis in his diabetic foot ulcer. Seven cases were infested by Chrysomya bezziana, an obligatory parasite that requires living mammalian tissue for its larval development. Larvae of the Calliphoridae family were responsible for the remaining case. Patients were managed with manual removal of larvae and irrigation of the site of infestation with saline. All infestations were nosocomial, being acquired in nursing homes. Carers of the old and debilitated should be made aware of the need for better oral care, especially for those on tube feeding. The use of window screens in nursing homes should be encouraged to reduce the chance of flies entering the vicinity of these patients. Electrocuters could also be mounted indoors to kill flies that do enter.

Myiasis in a wounded soldier returning from Panama.

An imported case of traumatic myiasis occurred in a soldier wounded during military action in Panama in December 1989 and evacuated to Brooke Army Medical Center, Fort Sam Houston, Texas. At the medical center, five larvae were removed from the scalp wound, reared to the adult stage, and identified as Cochliomyia hominivorax (Coquerel). Though this was the only reported case of wound myiasis of the 254 servicemen evacuated for medical treatment, this incident indicates a potential mechanism for the reintroduction of C. hominivorax into the United States.

Nosocomial nasal myiasis.

Sixty-five fly maggots were retrieved from the nasal cavity of an unconscious 64-year-old man who had been admitted 18 days earlier with diabetic hyperosmolar coma. The larvae were identified as Cochliomyia macellaria, an organism commonly associated with myiasis in the United States. The clinical time sequence indicates that this infection was acquired in the hospital. This incident provides further evidence that immobile and debilitated patients are at risk to acquire myiasis.

Otolaryngic manifestations of myiasis.

Although rare in North America and Europe, myiasis is seen occasionally in tropical and undeveloped countries. This disorder results from the penetration of a fly larva into a part of the human body, and it causes various symptoms in the host. The exposed areas of the skin are the ones predominantly affected and the eyes, ears, nose, and paranasal sinuses are less commonly affected. We review our experience with 12 patients with myiasis of the ears, nose, and paranasal sinuses.

Myiasis cutáneo-ulcerosas en pequeños animales / Cutaneous myiasis in small animals

En nuestro país los estudios acerca de las myiasis cutáneo-ulcerosas son escasos e incompletos, y de las que afectan a pequeños animales sólo se tienen datos de infecciones inducidas en la provincia de Buenos Aires. En este estudio se detectaron 149 perros y 9 gatos afectados por larvas de Cochliomyia hominivorax, 11 perros y 10 gatos por larvas de Phaenicia sericata. Las lesiones variaron desde superficiales leves hasta cavernosas muy graves, las mismas se hallaron distribuidas en la cabeza (boca, ojos, nariz y orejas), tronco, miembros, genitales externos, ano, periné y base de la cola. Las larvas I, II y III fueron extraídas en su totalidad entre los días 1 y 7 postinfección, en un número que varió entre 1 y 250. Los adultos de C. hominivorax han sido asociados a pasturas y floresta, y se ejerce sobre ellos control y vigilancia en las áreas subtropicales para evitar pérdidas en la producción ganadera. Los hallazgos en pequeños animales de zonas templadas y vinculados a áreas urbanas, alertaría sobre los riesgos de dispersión de una parasitosis de consecuencias aún no evaluadas en nuestro país. Las myiasis por P. sericata están estrechamente relacionadas con tejidos necrosados o cadáveres, por lo tanto, los datos aquí aportados representan los primeros registros de la especie como agente causal de myiasis primaria en pequeños animales

Cochliomyia hominivorax (diptera; calliphoridae) como agente causal de miasis aural en un niño de Costa Rica / Cochliomyia hominivorax (diptera; Caliphoridae) as causal agent of aural myiasis in a child at Costa Rica

Se informa de un caso de miasis aural en un niño de nueve años, producida por Cochliomyia hominivorax. La infestación tuvo lugar como consecuencia de una otitis crónica supurativa. El paciente tuvo pérdida del tímpano y perforación del hueso temporal