Before revision: 250px|Transovarial and transstadial transmission of the Ixodes tick Transstadial transmission occurs when a pathogen remains with the vector throughout the life stages ("stadium") of the vector .
After revision: 250px|Transovarial and transstadial transmission of the Ixodes tick Transstadial transmission occurs when a pathogen remains with the vector from one life stage ("stadium") to the next .