Mycoplasma wenyonii

Question 1

what is the clinical presentation of Mycoplasma wenyonii?

chronic = variable signs

Answer 1

• sudden drop in milk yield
• febrile (if acute)
• anemia (pale mm ± tachycardia)
• swellings (teats/scrotum, edema of hindlimbs)
• pre-femoral lymphadenopathy
• depression, weight loss, diarrhea, infertility

Question 2

signs of mycoplasma wenyonii are more severe if ____.

Answer 2

immunocompromised

Question 3

what is the seasonality of mycoplasma wenyonii?

Answer 3

late summer, early autumn

Question 4

mycoplasma wenyonii is a ____, ____ dz

Answer 4

chronic, insidious

Question 5

what type of transmission does mycoplasma wenyonii have?

Answer 5

blood

Question 6

true or false: mycoplasma wenyonii infection not commonly associated with severe enough dz to require tx

Answer 6

true

Question 7

why does mycoplasma wenyonii cause anemia?

Answer 7

causes IMHA

Question 8

how do you diagnose mycoplasma wenyonii?

Answer 8

• PCR whole blood = confirmatory
• blood smear = suggestive
• biochem = suggestive

Question 9

what does a blood smear looks like of a cow with Mycoplasma wenyonii?

Answer 9

spherocytes, inclusion bodies on RBC surface

Question 10

what does the biochem of a mycoplasma wenyonii infected cow look like?

Answer 10

hyperbilirubinemia, increased hepatic markers, no hemoglobinuria

Question 11

what is the tx for mycoplasma wenyonii?

Answer 11

oxytetracycline

likely chronic carriers for life tho