Amphibian biodiversity is threatened by a range of pathogens, but in Britain, only one has been shown to be responsible for amphibian declines: ranaviruses. For 30 years, we have tracked the distribution of unusual amphibian mortality events caused by ranaviruses and identified cofactors that determine how severe a disease outbreak may be. Despite this, we still don’t truly understand the risk ranavirosis poses to the one species known to experience population declines in Britain, the common frog. You can change this. In this project, you can take advantage of our recently developed non-lethal sampling method to generate data to test our current models of how climate change has led to shifts in the virus distribution. You will be able to develop agent-based models to investigate the true prevalence and virulence of ranaviruses in wild frog populations and explore how frog immunity and other traits dictate infection and disease outcomes. Opportunities also exist for pathogen genotyping in concert with a 170+ WGS ranavirus database we have available and experimental studies of infection, disease, and pathogen evolution.