Occurs when a reservoir population causes an epidemic in a novel host population
Spillover infection, also known as pathogen spillover and spillover event, occurs when a reservoir population with a high pathogen prevalence comes into contact with a novel host population. The pathogen is transmitted from the reservoir population and may or may not be transmitted within the host population.[1] Due to climate change and land use expansion, the risk of viral spillover is predicted to significantly increase.[2][3]
^Ebola. (2014). National Center for Emerging and Zoonotic Infectious Diseases, Division of High-Consequence Pathogens and Pathology, Department of Health & Human Services, CDC.