Vehicle transmission typically involves three critical steps:
Contamination: The vehicle becomes contaminated with the pathogen. This can occur through direct contact with an infected individual or exposure to an environmental source containing the pathogen. Survival: The pathogen must be able to survive on or within the vehicle for a period of time. Factors influencing survival include temperature, humidity, and the presence of organic material. Introduction: The pathogen is introduced to a new host, often through ingestion, inhalation, or inoculation.
