Human intestinal parasites in non-biting synanthropic flies in Ogun State, Nigeria

Summary Filth-feeding and breeding, non-biting synanthropic flies have been incriminated in the dissemination of human enteropathogens in the environment. This study determined the species of non-biting synanthropic flies associated with four filthy sites in Ilishan, Ogun State, southwest Nigeria, a...

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Bibliographic Details
Published in:Travel medicine and infectious disease 2013-05, Vol.11 (3), p.181-189
Main Authors: Adenusi, Adedotun Adesegun, Adewoga, Thomas O. Sunday
Format: Article
Language:English
Subjects:
Abattoirs
Animals
Cysts
Diptera - parasitology
Drinking water
Female
Food contamination & poisoning
Garbage
Helminths
Humans
Infectious Disease
Intestinal Diseases, Parasitic - parasitology
Larvae
Male
Mechanical transmission
Nigeria
Parasite Load
Parasites
Parasites - classification
Parasites - isolation & purification
Protozoans
Sewage
Synanthropic flies
Travel medicine
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Summary:Summary Filth-feeding and breeding, non-biting synanthropic flies have been incriminated in the dissemination of human enteropathogens in the environment. This study determined the species of non-biting synanthropic flies associated with four filthy sites in Ilishan, Ogun State, southwest Nigeria, and assessed their potentials for mechanical transmission of human intestinal parasites. 7190 flies identified as Musca domestica (33.94%), Chrysomya megacephala (26.01%), Musca sorbens (23.23%), Lucilia cuprina (8.76%), Calliphora vicina (4.59%), Sarcophaga sp. (2.78%) and Fannia scalaris (0.70%) were examined for human intestinal parasites by the formol–ether concentration and modified Ziehl–Neelsen techniques. Eggs of the following parasites: Ascaris lumbricoides (34.08%), Trichuris trichiura (25.87%), hookworms (20.45%), Taenia sp. (2.36%), Hymenolepis nana (1.11%), Enterobius vermicularis (0.56%), Strongyloides stercoralis (larvae; 3.89%) and cysts of Entamoeba histolytica/dispar (27.26%), Entamoeba coli (22.67%), Giardia lamblia (3.34%) and Cryptosporidium sp. (1.81%) were isolated from the body surfaces and or gut contents of 75.24% of 719 pooled fly batches. The helminths A. lumbricoides and T. trichiura and the protozoans, E. histolytica/dispar and E. coli were the dominant parasites detected, both on body surfaces and in the gut contents of flies. C. megacephala was the highest carrier of parasites (diversity and number). More parasites were isolated from the gut than from body surfaces ( P  
ISSN:1477-8939
1873-0442
DOI:10.1016/j.tmaid.2012.11.003