pathogen-host interactions

Pathogen-host interactions refer to the relationship between disease-causing organisms (pathogens, like bacteria or viruses) and their human or animal hosts. When a pathogen enters a host, it can invade cells, reproduce, and cause illness. The host's immune system responds to fight off the pathogen, trying to eliminate it. This dynamic can lead to different outcomes: the host may recover, the pathogen may persist, or both can evolve. Understanding these interactions helps scientists develop vaccines and treatments, ultimately aiming to improve health outcomes and prevent diseases.