What is the difference between a vector and a p... - SS2 Biology Microorganisms In Action Question

In the context of disease transmission, a vector and a pathogen are distinct entities with different roles. A vector is a living organism, such as an insect or animal, that acts as an intermediary in transmitting disease-causing pathogens from one host to another. Vectors acquire the pathogens from infected individuals or reservoirs and then transfer them to susceptible individuals through biting, direct contact, or mechanical transfer. On the other hand, a pathogen refers to the disease-causing microorganism itself, such as a bacterium, virus, parasite, or fungus. Pathogens can invade and replicate within host organisms, causing infections and leading to the development of disease. While vectors facilitate the physical transfer of pathogens, the pathogens themselves are responsible for the actual infection and subsequent disease manifestation in the host.