The most common infected animal worldwide is the domestic sheep, for more information see fly strike in sheep. This condition is caused by the blowfly (particularly Lucilia sericata and its sister species L. cuprina), especially where the weather is often hot and wet. Blowfly strike accounts for over A$170 million a year in losses in the Australian sheep industry, the largest such losses in the world. Given the seriousness of the risk, Australian sheep farmers commonly perform preventive measures such as mulesing designed to remove the most common targets for the flies. The docking of lambs' tails (another frequently-soiled area that flies target) is also commonly practiced by sheep farmers worldwide. Maggots also occasionally infest the vulvar area, causing the condition called vulvar<unk> . Such problems are not peculiar to Australia and New Zealand; they occur worldwide, especially in countries where livestock, particularly sheep, are kept under hot, wet, conditions, including most of Africa and the Americas, ranging from the cold temperate regions in the north, to corresponding latitudes in the south.<unk>  is also not restricted to sheep; screwworm flies (Cochliomyia hominivorax in particular) regularly cause upwards of US$100 million in annual damages to domestic cows and goats, though the impact has been heavily mitigated in recent years by the sterile insect technique.
Myiasis
Trichiasis
Taeniasis
Trichuriasis
Acariasis
Ophiasis
Opisthorchiasis
Monorchism