Common in tropical and temperate regions around the world, fire ant stings can cause chest pains, nausea, shock, and more. | Black flies and sandflies bite animals and people, are common all over the world, and can cause Sandfly Fever and River Blindness. | Frequently found in southeastern Asia, India, and Northern Australia, chiggers are likely to bite in late spring/summer and transmit tropical Typhus. | Also known as 'no-see-ums,' midges typically bite at dawn and dusk, frequently attack in large numbers, and can cause severe skin irritation and itching. |