Yaws is a non-venereal tropical infectious disease caused by the organism Treponema pertenue.[1] This organism is closely related to the. Yaws is an infectious tropical disease caused by the spirochete (spiral shaped) bacterium known as Treponema pertenue. The disease presents in three stages . Yaws is a tropical disease characterized by a primary cutaneous lesion, followed by a granulomatous skin eruption, and sometimes by late destructive lesions of.

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Treponema pallidum infection in the wild baboons of East Africa: This page was last edited on 4 Decemberat Yaws is common in at least 14 tropical countries as of Archived from the original on 11 October The treponematoses are an infection with any treponeme. Diagnosis The diagnosis of stage 1 and stage 2 yaws is made by microscopic examination of tissue samples darkfield examination from the skin lesions of affected individuals.

It is not a sexually transmitted disease. By using this site, you agree to the Terms of Use and Privacy Policy. Untreated lesions heal spontaneously over 3 to 6 months leaving hyperpigmentation.

In total, neglected tropical diseases affect more than 1 billion people each year. Enhancing Healthcare Team Outcomes Yaws has required global coordination, as endemic areas often are under-equipped for diagnosis or treatment. Journal of Tropical Medicine. Within 90 days but usually less than a month of infection a painless but distinctive “mother yaw” nodule appears, which enlarges and becomes warty in appearance.


Advances in the diagnosis of endemic treponematoses: Yaws is spread by direct contact with the fluid from a lesion of an infected person.

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The current name is believed to be of Carib origin, “yaya” meaning sore. Views Read Edit View history. Archived from the original on 3 March Eradication of infectious diseases.

There are two main groups of treponematoses: Comparisons may be useful for a differential diagnosis:.

Yaws General Discussion Yaws is an infectious tropical disease caused by the spirochete spiral shaped bacterium known as Treponema pertenue. Information on current clinical trials is posted on the Internet at tropixal. The latter requires the presence of antibodies with one being a non-treponemal antigen and the other a treponemal antigen. Endemische Hautkrankheit der Tropen durch Treponema pertenue. Retrieved 27 February The skin may break open, forming an ulcer.

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The Merck Manual-Home Edition. Globalization and disease Mathematical modelling of disease Pandemic Transmission horizontal vertical Vaccination Zoonosis.

Chlamydia trachomatis Chlamydia Lymphogranuloma venereum Trachoma. They are separated into three species on the basis of animal infections. Early symptoms include lesions chancres of the skin, anus, vagina, or the moist surfaces of the mouth. This book is distributed under the terms of the Creative Commons Attribution 4.

What is Yaws Disease? – End Yaws

In between primary and secondary or secondary and tertiary stages, a latent trppical occurs. Based on symptoms, blood antibody tests, polymerase chain reaction [4]. Pinta may be acquired by direct nonsexual contact. The genetic analysis of the yaws’ causative bacteria— Treponema pallidum pertenue —has led to the conclusion that yaws is the most frambezia of the four known Treponema diseases. Despite the success of eradication campaigns, there will for years be the challenge of the differential diagnosis, both of the active diseases and their end results.


The disease challenges the development of entire communities, as adults who become disabled become an economic burden for their environment. A more recent estimate suggested that there were still over 2. According to the official roadmap, elimination should be achieved by The most common location is the lower extremity, but any site of exposure may be involved.

At the present time, there is no treatment for the destructive bone lesions or scars associated with stage 3 yaws. Definition The treponematoses are an infection with any treponeme. The latent period is defined as a positive serology with no clinical signs.

Beers MH, Berkow R. Disease is most commonly seen in children and is transmitted from skin to skin contact.

In some cases, yaws may be transmitted through the bite of an infected insect. Review Yaws, a non-venereal treponemal infection. Luke Maxfield ; Jonathan S.