House fly
originated in central Asia, the insect expanded its range worldwide long ago as a commensal organism to human populations; the housefly is always found in [...] production create the ideal conditions for maggot development. In extreme cases, large fly populations can even create public health issues for the communities [...] viruses (such as the Newcastle Disease virus), bacteria (such as Salmonella and E. coli ), protozoan parasites (such as Giardia ), and the eggs of many parasitic