Andrew investigates infectious and non-infectious disease threats to wildlife conservation, including the drivers of disease emergence and zoonotic spillover. He has published > 400 scientific articles, including primary data and reviews on emerging infectious diseases and on disease threats to biodiversity. He discovered a new epidemic ranaviral disease of amphibians in Europe and he published the first definitive report of the global extinction of a species by an infectious disease. He has led several international and multi-disciplinary wildlife disease research projects, including the investigation of vulture declines in South Asia and the international research team that discovered the fungus Batrachochytrium dendrobatidis as a cause of amphibian declines (for which he was awarded a medal by the CSIRO in Australia). In 2010, he won a Royal Society Wolfson Research Merit Award for his work on zoonotic viruses in African bats and in 2016 he was elected a Fellow of the Royal College of Veterinary Surgeons for meritorious contributions to learning.