Final answer:
The term iatrogenic refers to diseases contracted due to medical procedures and not the typical transmission of infectious diseases. Thus, iatrogenic is not a way patients typically contract infectious diseases, through means such as fomites, vectors, or asymptomatic carriers.
Step-by-step explanation:
The question asks which option is not a way a patient can contract an infectious disease. Infectious diseases can be contracted through various mechanisms including direct contact, indirect contact with fomites, vectors like mosquitoes and ticks, and asymptomatic carriers who can transmit the pathogen regardless of showing symptoms. However, the term iatrogenic refers to diseases that are contracted as a result of a medical procedure, not through transmission of infectious diseases in a traditional sense. Therefore, option (d) Iatrogenic is not a way a patient can contract an infectious disease typically, as it is associated with health care procedures leading to an infection rather than direct or indirect transfer of pathogens from an external source.