Changes

==Diagnosis==

==Diagnosis==

Acutely affected animals:

Acutely affected animals:

Affects a group of calves. Respiratory signs are present and the animals are dull. To establish the cause nasopharangeal swabs or broncho-alveolar lavage can be undertaken and examined for bacteria, viruses or mycoplasma.

Affects a group of calves. Respiratory signs are present and the animals are dull.

To establish the cause nasopharangeal swabs or broncho-alveolar lavage can be undertaken and examined for bacteria, viruses or mycoplasma.

 

Fluorescent antibody tests can be used to detect viral causes.

Fluorescent antibody tests can be used to detect viral causes.

Paired serum samples will also show recent exposure to a viral pathogen.

Paired serum samples will also show recent exposure to a viral pathogen.

Post mortem exam can confirm the presence of certain pathogens.

Post mortem exam can confirm the presence of certain pathogens.

Chronically affected animals:

Chronically affected animals:

Usually affects number of animals who are kept indoors. The disease is gradual in onset and although respiratory disease is present the animals remain bright and eating.

Usually affects a group of animals who are kept indoors. The disease is gradual in onset and although respiratory disease is present the animals remain bright and eating.

 

==History and Clinical signs==

==History and Clinical signs==

Causes unthriftiness in animals < 6 months old

Causes unthriftiness in animals < 6 months old