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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Yaws is very common in tropical areas of the world but it is not known in the United States. This disease affects the nerves that are located outside the central nervous system peripheral nervesand the skin, mucous membranes, and eyes. The non-treponemal antibodies are the same as used in syphilitic disease: Infection is spread by direct skin to skin contact, and there has been a consideration for fly vectors although the latter is unproven. Prognosis with treatment is very good if caught during primary or secondary stages.

Once positive, these latter 2 tests are positive for life. Alone we are rare. In between primary and secondary or secondary and tertiary stages, a latent period occurs. Archived from the original on 2 February The research led by Dr.


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Andrews’ Diseases of the Skin: Comparisons may be useful for a differential diagnosis: It manifests itself in the form of painful ulcers on the skin, which are also a means of contagion of the disease.

Archived from the original on 3 March These secondary lesions frequently ulcerate and are then highly infectious, but heal after six months or more. Chlamydia trachomatis Chlamydia Lymphogranuloma venereum Trachoma. The treponematoses are an infection with any treponeme. Infectious diseases Bacterial diseases: BV4 non- proteobacterial G- primarily A00—A79—, — The last clinical case in India was reported in and the last latent case in Koff AB, Rosen T.

Merck Research Laboratories; Combinations of serologic assays and nucleic acid amplification tests have been used as the primary mode of identification.

This dosing is lower than used in venereal syphilis. Similar articles in PubMed. Until recently, the only treatment for yaws was penicillin administered through injections. Yaws is a tropical infection of the skinbones and joints caused by the spirochete bacterium Treponema pallidum pertenue.

Tropical Medicine Central Resource

Secondary lesions can occur in the presence of primary findings. These have a chance of false-positive results but good sensitivity and are useful as markers to confirm cure with falling titers following treatment.


PMC ] [ PubMed: Yaws is most commonly seen among children in tropical regions and is spread by skin-to-skin contact. Each year it affects more thanchildren between the ages of 5 and 15 in 13 endemic countries of West Africa, Southeast Asia and the Pacific.

What is Yaws Disease?

Although this is also a disease of children, it has many features distinguishing it from yaws, for example, a presence in hot, dry areas including deserts of Africa and Saudi Arabia, transmission from salivary contact, rare to have initial cutaneous lesions, and if present on oral mucosa, limited dissemination, destruction of nose and palate are late complications.

Yaws is a common infectious disease among children living in the tropical areas of Africa, South and Central America, the West Indies, and the Far East.

Archived PDF from the original on 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.