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Bug of the day - bugguy19
Nice and complete.thank you.
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Hi every one , Eid Mubarak

Today we will do the non motile, non H2S producer groups of ENTEROBACTERIACEAE

1/shigella
2/proteus
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Thank you.Eid MubarakSmile
Okay.
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I think it should be yersinia.proteus H2s producible and highly motile.
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rukhz , you are very correct, am sorry for this mistake
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Today we will do the non motile, non H2S producer groups of ENTEROBACTERIACEAE

1/shigella
2/Yersinia
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rukhz, I do appreciate very much your additions and corrections, I hope any one will benefit from this post.

Any kind of response is appreciated. Smile
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Shigella

1/Sh.dysenteriae (most sever, most tested )

2/Sh.sonni (most common in USA)

3/Sh. Flexneri

4/Sh.bodyii



Sh.dysenteriae✈✈✈✈✈✈✈✈✈

Gram -ve rod
Non motile
Not produce H2S
Not lactose fermented

Infect only human
Feco-oral route
Invade intestinal submicosa NOT lamina propria causing blooooooooody diarrhea

Shiga toxin ✈✈✈inactivate 60s ribosomal sub unit
(same produced by EHEC ) ✈✈✈✈✈HUS

Dx✈✈✈✈stool culture
ttt ✈✈✈✈✈✈fuloroquinolone
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And also invade M cell(imp), polymerizes actin jet trails to go laterally without going to ECF unlike salmonella so rarely invade blood vessels and cause bacteremia unlike salmonella.

Plus very few organism required to cause infection(1-10).
Thank you Smile
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Yersinia ✈✈✈✈✈✈

1/Y.enterocolitica

gram -ve rod
Non lactose fermented
Non motile @37c BUT motile @25c temperatures
Non H2S producer
Bipolar staining
Zoonotic✈✈✈ ingestion of contaminated food or water or un pasteurized milk
Toxin similar to E. Coli ✈✈✈ increase cGMP

Acute enterocolitis + bloody diarrhea
Mesenteric adenitis
Arthritis (esp in HLA-B27)

Self limited
Antibiotics (gentamycin or chloramphenicol ) if septicemia preset






2/Y.Pestis (Black death )

gram -ve rod
Non motile
Non lactose fermenter
Non H2S producer
Bipolar stainig
Co-agulase +ve

Wild rodent ✈✈✈✈Bubonic plague
Inhaled aerosolized ✈✈✈✈pneumonic plague

FI.... is antiphgositic capsular Ag
Virulence is plasmid transmitted

ttt✈✈✈✈✈streptomycin or aminoglycoside
vaccine✈✈✈✈ killed or attenuatted



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