Bacterial and fungal diseases
Diseases caused by bacteria and fungi continue to cause
significant problems for farmed and wild fish and
shellfish. We try to control established diseases, through
regulations and the efforts of our Fish Health Inspectorate. In
addition, our scientists have an established pedigree in the
expert investigation and diagnosis of emerging conditions
caused by such pathogens.
Of particular concern are new and emerging diseases. Emerging
diseases can include established pathogens that can change their
host range or develop resistance to available treatments. One such
example is Yersinia ruckeri, causative agent of
Enteric Redmouth (ERM) in rainbow trout (Oncoryhnchus
mykiss). The disease is also causing increased problems in
Atlantic salmon (Salmo salar L.)
We continue to lead research into fungal disease (largely caused
by oomycetes: water moulds), including crayfish plague. We are
also currently undertaking, on behalf of Defra, an assessment of
the risk of the OIE notifiable disease
epizootic ulcerative syndrome (EUS), a seasonal condition
affecting wild and farmed freshwater and estuarine fish.
Through our Aquatic Product Evaluation team we work closely with
major aquaculture health product producers, providing them with
expert advice. We also directly test their products' safety and
efficacy, using our biosecure, accredited (Good Laboratory
Practice-compliant) aquarium facilities. Over the years, a
number of important aquaculture medicines have gained their
registrations with help from Cefas scientists.
For more about our scientific work in this area contact David
Verner-Jeffreys.