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NABS Significant Disease Investigations

Some investigations from the network

since it started in 2018

A Yersiniosis outbreak in cows and weaners

A Yersiniosis outbreak in cows and weaners

16 of 170 Brahman die within 48 hours of becoming sick.
Annual ryegrass toxicity in yarded bulls

Annual ryegrass toxicity in yarded bulls

15 of 40 bulls die within days of showing respiratory and nervous signs.
Yellow-wood poisoning of heifers

Yellow-wood poisoning of heifers

19 heifers in a mob of 350 die in a five-day period.
Acute oxalate poisoning of merino ewes

Acute oxalate poisoning of merino ewes

An investigation into the recumbency and death of 80+ ewes.
Bovine hypertensive syndrome in mature cows

Bovine hypertensive syndrome in mature cows

An investigation of multiple cow mortalities after entry to a station feedlot.
Multiple tick fever deaths in young steers

Multiple tick fever deaths in young steers

An investigation of five steers found dead near water square in three days.
Jaagsiekte: chronic weight loss/ respiratory syndrome of horses

Jaagsiekte: chronic weight loss/ respiratory syndrome of horses

An investigation of weight loss and deaths of horses with progressive lung pathology.
Sudden death of six heifers due to a hepatotoxin

Sudden death of six heifers due to a hepatotoxin

An investigation into the sudden of six heifers within 8 days.
Bacterial pneumonia in recently-weaned steers

Bacterial pneumonia in recently-weaned steers

Investigation of a disease event with 14 dead and another 100 sick a week after arriving on a new property.
Paralysis tick kills 22 cows

Paralysis tick kills 22 cows

Investigation of a high mortality event that had an instant fix.
Septicaemia with multi-organ vasculitis and thrombosis

Septicaemia with multi-organ vasculitis and thrombosis

An investigation of 16 young bulls that died within a month of being introduced from the south.
From dull to dead – a horse with Hendra virus

From dull to dead – a horse with Hendra virus

A case reminder of an important zoonoses and differential for African horse sickness.
Rectal haemorrhage and sudden death – possible JHS

Rectal haemorrhage and sudden death – possible JHS

Investigation of an acute disease event that was characterised by liver damage and haemorrhage.
Lantana poisoning in yearling heifers

Lantana poisoning in yearling heifers

An investigation of buccal erosions and skin lesions in heifers from multiple sources.
Rule-out of exotic disease in feral pigs

Rule-out of exotic disease in feral pigs

The clinical examination and sampling of feral pigs in poor condition.
Acutely lame sheep in western Queensland

Acutely lame sheep in western Queensland

Investigation of acute lameness in a mob of recently introduced sheep.
Nitrate-nitrite poisoning in mature bulls

Nitrate-nitrite poisoning in mature bulls

Investigation of the overnight death of 15 (of 40) bulls held in a yard.
Obstructive urolithiasis in steers

Obstructive urolithiasis in steers

Investigation of ill health in young Brahman steers where affected animals became reluctant to move and ultimately die.
Ill-thrift in horses due to suspect plant toxicity

Ill-thrift in horses due to suspect plant toxicity

Investigation of 12 dull and lethargic horses in a herd of 30.
Vesicles on the teat skin of a dairy cow

Vesicles on the teat skin of a dairy cow

The immediate examination of skin lesions seen on a dairy cow at the afternoon milking.
Suspect Chillagoe disease in horses

Suspect Chillagoe disease in horses

Post mortem of a sick stockhorse following deaths of others found at muster.
Lead poisoning in heifer mob

Lead poisoning in heifer mob

Four heifers in a mob of 21 died shortly after showing acute neurological signs. A case report of the diagnosis and management of a reportable disease event.
Extremely poor season affecting weaner health

Extremely poor season affecting weaner health

Investigation of the health issues following early weaning following multiple deaths.
Polioencephalomalacia in 15 weaners

Polioencephalomalacia in 15 weaners

Investigation of weaners with sudden onset of head pressing, jaw champing and staggering after yarding.
Suspect plant poisoning of breeders held in laneway

Suspect plant poisoning of breeders held in laneway

Investigation of suspect plant poisoning of breeder cows after being yarded overnight.
Deaths in wild caught buffalo

Deaths in wild caught buffalo

Investigations of wasting and deaths in holding yards in the weeks post capture.
Sow mortality in small piggery, not ASF

Sow mortality in small piggery, not ASF

Investigation of morbidity and mortalities over 16 weeks in a 60-sow piggery.
Nephrotoxicity most likely caused by plant poisoning

Nephrotoxicity most likely caused by plant poisoning

Investigation of deaths of 10 weaners from a mob of 70 over 4-6 weeks.
Botulism as likely cause of paralysis and death

Botulism as likely cause of paralysis and death

Investigation of ongoing, unexplained deaths where botulism was high on the list of differentials.
Shipping Fever deaths in yarded yearlings

Shipping Fever deaths in yarded yearlings

Investigation of disease outbreak where 30 yearlings (from a mob of 800) died after yarding.
Deaths at mustering – possible metabolic

Deaths at mustering – possible metabolic

Investigation of repeated events of cows in good body condition going down during mustering and dying.
Zamia staggers in heifers and weaners

Zamia staggers in heifers and weaners

Investigation of irreversible hindleg ataxia in young animals.
Murray Valley Encephalitis (MVE) in a stock horse

Murray Valley Encephalitis (MVE) in a stock horse

A definitive diagnosis that confirmed arbovirus activity and the absence of EADs.
Tick fever deaths in a holding yard

Tick fever deaths in a holding yard

How a systematic approach to an investigation of sudden deaths yielded rapid results.
Early weaning plus BRD and monensin toxicity

Early weaning plus BRD and monensin toxicity

Investigation of 40 weaners dead and another 60 depressed and listless.
Calf deaths in a dairy herd due to salmonellosis

Calf deaths in a dairy herd due to salmonellosis

Investigation of the death of 18 calves in a dairy herd on the Atherton Tableland.