Which process involves the vector vomiting the pathogen into another organism?

The process that involves the vector vomiting the pathogen into another organism is regurgitation. This mechanism typically occurs in certain vectors, such as mosquitoes and ticks, during feeding. When these vectors ingest blood or bodily fluids from an infected host, the pathogen can be present in their gut. If the vector needs to feed again or if it is disturbed, it may regurgitate some of its stomach contents, which can include the pathogens. This effectively transfers the pathogens into the new host's body, facilitating the spread of the disease.

Inoculation typically refers to the direct insertion of a pathogen into a host through a bite or sting, rather than through regurgitation. Fecal contamination involves the transfer of pathogens via feces, which might occur in different contexts but does not directly involve the vector actively transmitting the pathogen in the same manner. Active transmission is a broader term that could involve multiple methods of transmitting pathogens and does not specifically refer to the action of vomiting pathogens into a host.