Sketchy Microbiology: Yersinia Enterocolitica and Yersinia Pestis

Yersin’s Pet Shop — Yersinia Enterocolitica and Yersinia Pestis

Red Color — Gram Negative Rods

English Terrier Puppy — Yersinia Enterocolitica

Puppy Poop - Y. Enterocolitica is transmitted through animal poop

Baby Bottle - Y. Enterocolitica can also be transmitted through contaminated milk

Child — Children are commonly infected with Y. Enterocolitica

Safety Pin — Y. Enterocolitica has “bipolar staining” like a safety pin

Ice on the windows — Y. Enterocolitica is resistant to cold temperatures (can multiple in 4 C)

Glass Capsule — Y. Enterocolitica has encapsulated virulence factor

Red Stool — Y. Enterocolitica causes bloody Diarrhea

Puppy licking RLQ of toddler — Y. Enterocolitica mimics appendicitis

Rodents — Yersinia Pestis

AKA; Bubonic plague — 25 million people died

Glass Cage — Yersinia Pestis is encapsulated

Anti-Flea spray sign — Transmitted to human via fleas on Rodents. Flea bites rodent, then fleas bites humans

Swollen lymph nodes — Forms “Buboes” with swollen tender lymph nodes

What can these buboes lead to?

Can get into the blood and cause abscesses in organs or DIC from endotoxin and neurotoxin

Turkey baster — Yersinia outer proteins that inhibit macrophages through a type 3 secretion system, inhibiting phagocytosis

Sai and bicycle wheel — Treatment is Aminoglycosides with Tetracycline

Vaccine Poster — Killed vaccine is used for Y. Pestis