Jiggers can devastate a population of people, despite their tiny size. An infestation of jiggers, once considered a thing of the past, has emerged again and this time it is wreaking havoc on the nation of Uganda, killing 20 thus far and making 20,000 people sick.

Formally known as the chigoe, or sand flea, jiggers burrow into the skin. The most common areas of infestation are the feet. Once inside the body they grow and breed, multiplying by hundreds and sucking the blood. They affect body parts that rot away like feet, hands, eyelids and buttocks.

The tiny mites can easily kill children, adults with compromised immune systems, and the elderly.

Jiggers are said to have been introduced to the African continent by European explorers in the 16th century. It has been associated with extreme deprivation, and is common among children and single men. Personal hygiene plays a big role in causing infection, especially in warm dusty places. Besides sub-Saharan Africa, Latin America and the Caribbean have had problems with jiggers as well.

The most affected part of Uganda is the Busoga region in the east, 90 miles from Kampala, Uganda's capital. Some cases have been reported in the central region, less than 43 miles from the city, which has led to fears that the whole country might be affected.

There are some rural inhabitants of Uganda who still believe in witchcraft and feel that they have been cursed with jiggers. Instead of being proactive, the victims chose to just wait and die as opposed to engaging in simple treatment methods.

Treatment involves removal of the insect or topical medication. Studies have also shown that wearing closed shoes and using insecticides indoors helps prevent jigger infestations. The Ugandan government has allocated $1 million to fight the spread of jiggers.