Spirochetes(yaws, pinta, Bejel)

Non-veneral disease: yaws, pinta, Bejel

Yaws

Causative agent: T. pertenue

It is highly contagious in childhood

Primary lesion: ulcerating papule on arms & legs

Transmission: by person to person contact

Transplacental or congenital infection does not occur

Scar formation & bone destruction are common

Diagnostic procedure & therapy are similar to syphilis

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lPinta

lCausative agent: T. carateum

lOccurs endemically in all age group

lDisease restricted to dark skinned races

lPrimary lesion: Nonulcerating papule on exposed areas

lTransmission: by non-sexual means – direct  contact or by flies

lDiagnosis & treatment are same as for syphilis

lBejel

lCausative agent: T. endemicum

lOccurs particularly among children

lProduces highly infectious skin lesion

lPenicillin is the drug of choice

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lNon-veneral disease:

lAll give positive treponemal & nontreponemal serologic test for syphilis

lNone are sexually transmitted

lAll are commonly transmitted by direct contact

lNone of the causative agents have been cultured on artificial media.

PERTUSIS
(WHOOPING COUGH):http://whoopingcoughofhuman.blogspot.com/

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