Final answer:
Corynebacterium jeikeium is an opportunistic pathogen, causing disease primarily in individuals with compromised immune systems.
Step-by-step explanation:
The pathogenicity of Corynebacterium jeikeium is classified as opportunistic. This means that it can only cause disease in certain situations that compromise the host's defenses, for example in individuals with weakened immune systems due to conditions like HIV/AIDS, cancer treatments, or severe wounds and burns.
It is not typically airborne, waterborne, or vector-borne. It is often associated with nosocomial infections, particularly in immunocompromised patients.