Many animal species throughoutthe world are facing the threat of extinction as new diseases spread through their populations - diseases that have unwittingly been introduced by humans. Some species have already lost the fight for survival. In
Hawaii numerous bird species have become extinct and amphibian populations throughout the world are disappearing. Scientists are now going on the counter-attack in an effort to prevent other species succumbing to the same threat. Quentin Cooper talks to researchers who are looking at disease threats and means of conservation.
Producer Sarah Empey EMAIL: material.world@bbc.co.uk