ORNITHONYSSUS SYLVIARUM (ACARI: GAMASIDA: MACRONYSSIDAE) A CAUSE OF PRURITIC DERMATITIS FOR POULTRY FARM WORKERS IN SOHAG GOVERNORATE, EGYPT | ||||
| Journal of the Egyptian Society of Parasitology | ||||
| Article 16, Volume 50, Issue 3, December 2020, Page 599-604 PDF (1.12 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jesp.2020.131092 | ||||
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| Authors | ||||
| NOHA S. AHMED; AMAL M. AHMED | ||||
| Departments of Medical Parasitology, Faculty of Medicine, Sohag University, Egypt | ||||
| Abstract | ||||
| People urban areas have shared environment with pets and animals, mainly birds and rodents. These animals harbor zoonotic parasites, as mites of the suborder Mesostigmata. The mites were Dermanyssus gallinae (the poultry red mite) and Ornithonyssus sylviarum & O. bursa, the primary hosts are Rattus norvegicus and Rattus rattus. These species of mites may be harmful to animals, as well as to people working in the shops or potential pet owners. The study dermatological and parasitological evaluated the workers (n=30) in a poultry farming at El-Kawther, Sohag Governorate for mite pruritus and to identify mites in the period from July to October 2019. Detailed history was taken from all workers. Full examination was done. Workers gave history of exposure to insects bite in the poultry farm where they work. Workers were advised to collect any insects that can bite them or come in contact with their skin, which were referred to Parasitology unit, Sohag University, for identification both by light microscopy and SEM. Examination of all workers revealed that 70% (21/30) of them complained of itching of variable intensity. Age of participants ranged from 38-41 years all of them were males. About pruritus, all cases had insidious onset of pruritus, commonly in summer season (16/21 & 76.19%), especially at night (18/21 & 85.7%), Recurrence of the symptoms after treatment occurred (11/21 & 52.18%). Patients’ examination showed that skin lesions were more on the exposed sites forming excoriated papules (71.4%) and urticarial lesions (28.6%). Insects collected where examined by using light and SE microscope. Arthropods were identified as O. sylviarum in all cases. O. sylviarum is a causative agent of human mite dermatitis in Sohag Governorate. The identification of the cryptic species should be tolerable by amalgamating morphological study with molecular analyses of mitochondrial DNA sequence. | ||||
| Keywords | ||||
| Ornithonyssus (O) sylviarum; dermatitis; poultry workers; SEM; Upper Egypt | ||||
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