Australian vampires are commonly known as midges.
They are the smallest bloodsucking vampire in the world, often measuring less than half a millimetre in length. They are commonly known as sandflies, biting midges and many other expletive #%&** names.
For something so tiny it has a very painful bite! These things are much smaller than a pinhead, they are so light they float, they are so tiny, that you cant hear or see them.(especially in mirrors)
Their bites may leave large, red itchy bumps that may turn into a rash. These bumps are frequently,several times as itchy as mosquito bites, and tend to last longer as well.
In the various sorts of Australian vampires only the female is responsible for biting and sucking the blood of mammals, reptiles and birds. She requires the protein in the blood to make her eggs.
Avoid going out on full moons and localities near flood waters, estuaries, rivers and beaches, especially at dawn and dusk, they are known to be frequented by Aussie vampires; wear protective clothing (long sleeves/pants), and apply a repellent to exposed skin.
To repel the Australian vampires, counter-top repellents with high concentration of DEET could work, but may not be suitable to some people, eg. people with sensitive skin and pregnant women. Some alternative repellents to DEET are
Garlic of course
Any Citrus Juice
Avocado oil mixed with Dettol
Baby oil mixed with Dettol
Chinese herbal oil
Essential Lavender Oil
Tea tree oil
Vicks Vapor Rub
Marmite, Promite, Vegemite - anything with high Vitamin B content
In extreme situations, you can stab them with a wooden stake through the heart, but that's going to be pretty diificult.