What is the method of transmission in which an arthropod carries a pathogen from one host to another called?

The method of transmission in which an arthropod carries a pathogen from one host to another is referred to as biological transmission. In biological transmission, the pathogen undergoes a development or reproduction phase within the arthropod before being transmitted to the next host. This is in contrast to mechanical transmission, where the pathogen is simply carried on the surface of the arthropod without undergoing any physiological changes or development within the vector.

Understanding biological transmission is crucial in recognizing how certain diseases are spread within populations, as it highlights the role of vectors in the life cycle of pathogens. It emphasizes the need for measures to control both the vector population and the pathogen to prevent disease outbreaks.