1001 Space Earth Nature History First Civilisations Ancient Egypt Biblical Times Ancient Greece Ancient Rome Chinese, Japanese Civilisations Indian Civilisation African Civilisation The Early Americas The Rise of Islam The Middle Ages The Renaissance Civil War and Revolution The Industrial Revolution Two World Wars 20th-century Achievements Human World Science and Technology	Which disease was wiped out? Smallpox is a virus that once killed one in three of those who caught it. Survivors were left with permanently scarred skin. The World Health Organisation declared war on smallpox in 1967. By 1980 the world was virtually free of the disease.   Previous: Back Book: 1001 Section: History Chapter: 20th-century Achievements