Persistent Bacterial Pathogens

G-, aerobic, facultative intracellular, Res. species is bovine, causes primiparous abortion, spread by birth materials and milk,

Brucella abortus

Can live for days to months in the environment, population depop. is the control method, there is a vaccine for females, testing is mandatory

Brucella abortus

G- aerobic, obligate intracellular, main res. is ovine, causes primiparous abortion, spreads by birth materials,

Chlamydia abortus

Vaccine exists but only causes a marginal decrease in shedding, lives for days in environment, control by keeping a closed herd and promptly cleaning up birthing materials

Chlamydia abortus

G-, aerobic obligate intracellular, main reservoir hosts are ovine and caprine, causes abortion spread via birthing material, poop and urine

Coxiella burnettii

Q fever, can survive years in the environment, no vaccine, control is remove birth material and keep a closed heard

Coxiella burnettii

Acid fast, aerobic, facultative intracellular, main reservoir bovine, causes chronic diarrhea with malabsorption and wasting

Mycobacterium avium subspecies paratuberculosis

Johne’s disease, can live for years on some surfaces, no vaccine, annual testing is recommended, cull rate based on economics

Mycobacterium avium subspecies paratuberculosis

G- facultative anaerobe, facultative intracellular, main res. bovine, shed from adults and causes disease in calves, causes septicemia with embolic spread to lungs

Salmonella enterica subsp enterica serotype Dublin

Spreads via poop, can live for months to years on surfaces, 4-7 months in soil, ineffective vaccine, control is keeping herds closed, culling effective heifers and removing carriers

Salmonella dublin

Transmissible form of chlamydia spp?

elementary bodies

New infections of Coxiella burnettii can be acquired how?

Environmentally through inhalation, ingestion or tick

Which persistent bacterial infection is highly contagious and categorized as a select agent?

Q fever, C. burnettii

Which disease causes invasive, multiorgan disease in cows (especially calves) but gives humans simple diarrhea?

Salmonella dublin

Which disease specifically cannot infect birds and is highly endemic to Yellowstone bison

Brucella spp.

Which disease is a slow, chronic process diagnosed in cows usually over 2

Mycobacterium avium subsp paratuberculis, Johnes disease