A66: Yaws

Yaws is a group of chronic bacterial infections caused by the spirochete bacterium Treponema pallidum subspecies pertenue. These conditions are characterized by contagious skin lesions that are primarily found in the tropical regions of Africa, Asia, Latin America, and the Pacific. The disease is generally transmitted through direct skin-to-skin contact, often among children who have minor cuts or scrapes. Initial symptoms usually include a single, painless, and itchy 'mother' sore that heals on its own. However, weeks to months later, multiple 'daughter' sores can appear all over the body. If left untreated, Yaws can progress into a third stage that affects bones and can lead to deformities and disabilities. Other affected systems may include the skin and the skeletal system. Although yaws can be severe, it's important to note that it is curable with the right medications.