These confinement centers were erected in particularly remote areas and had facilities to cover quarantine periods for the sick.
In 1938, Dr. Gordon Alexander Ryrie in Malaysia proved that the paper money was not contaminated with leprosy bacteria, and all the leper colony banknotes were burned in that country.
[5] From 1913 to 1930, special aluminum (later copper-nickel) coins were minted in Manila for use in the Culion leper colony of the Insular Government of the Philippine Islands (then under the United States).
In 1942, during the Japanese occupation of World War II, emergency paper money was also issued inside the Culion colony.
The director, Dr. Gordon Alexander Ryrie, sent the special banknotes for examination and it was proved that the notes did not carry leprosy.
[3] Leper colony money is also known to have existed in Brazil, China, Costa Rica, Korea, Nigeria, Thailand, and Venezuela.