E. coli / EHEC Flashcards

1
Q

EHEC

A

E. coli enterohemorragica

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1
Q

cepa de maior importancia

A

O157:H7 ( 1 caso ja e considerado surto )

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2
Q

Dose infecciosa

A

Baixa, menos de 1000 bacterias. Pois tem uma maior resistencia ao PH acido do estomago.

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3
Q

Principal reservatorio

A

Ruminantes, em particular bovinos, pois nao possuem recptores para shigatoxinas.

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4
Q

periodo de incubacao

A

de 72 a 120 horas

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5
Q

Morfologia

A

Bastonete Gram negativa
Anaerobio facultativo
Movel

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6
Q

Mecanismo fisiopatologicos

A

toxina produzido in vivo

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7
Q

SC

A

diarreia aquosa com sangue a seguir. Sindrome uremica hemolitica, purpura trombotica

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8
Q

Virulencia

A

Principais toxinas Shiga (Stx-1 ou Stx-2), e os codificados pela ilha de patogenicidade denominada local de desaparecimento do enterocito (LEE)

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