NAVLE® Question of the day

MO TU WED TH FR
March 17, 2023
NAVLE

Over the past two weeks, several pigs in a herd have been febrile and depressed. Many were constipated, then had diarrhea.

A few were incoordinated and one had seizures. A few have died. Necropsy revealed petechial hemorrhages on the kidneys and larynx, and a hemorrhagic urinary bladder.

Of the following choices, which one is most consistent with a presumptive diagnosis?