The research area of infection mechanism focuses on understanding how pathogens such as bacteria, viruses, and parasites invade the body, evade the immune system, and establish infections within host tissues. This field of study seeks to elucidate the molecular and cellular processes involved in the pathogen-host interaction, including the mechanisms by which pathogens enter host cells, replicate, and spread throughout the body. Researchers in this area investigate how pathogens manipulate host cell signaling pathways, disrupt immune responses, and acquire nutrients to survive and proliferate within the host environment. Understanding these infection mechanisms is essential for developing novel therapeutics and vaccines to combat infectious diseases.