Bovine Virus Diarrhoea (BVD) is a viral disorder which at calves mainly respiratory disease, that is airway problems, causes.

Laryngeal diphtheria is a local appearing inflammation in the mucosa of the larynx caused by Fusobacterium necrophorum.

IBR is an acute viral disease, which affects in particular the front air ways.

Pasteurella bacteria can cause an acute respiratory infection in calves, where by the lungs and chest membranes are affected.

Influenza is a viral infection which mainly affects the airways in young bovine animals.

Respiratory disease or also called lung problems in calves are caused by a complex of factors, also known as calf flu. Both external factors (stable climate) as micro-organisms (viruses and bacteria) play a role in this.