Final answer:
Vehicle transmission (air) refers to the spread of pathogens through small particles suspended in the air, while droplet transmission occurs when pathogens are transmitted through larger respiratory droplets.
Step-by-step explanation:
The difference between vehicle transmission (air) and droplet transmission is the size of the particles carrying the pathogens. Vehicle transmission (air) refers to the spread of pathogens through small particles suspended in the air, such as dust or droplets that remain in the air for an extended period. Droplet transmission, on the other hand, occurs when pathogens are transmitted through larger respiratory droplets that are expelled when an infected person coughs or sneezes and then inhaled by nearby individuals. Examples of vehicle transmission (air) include the transmission of diseases like tuberculosis, while droplet transmission is commonly associated with contagious respiratory diseases like the flu and the common cold.