This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Mode of transmission of Listeria 
Select and explain. 
A. Ingestion, B. Inhalation, C. Skin inoculation, D. None
A: Ingestion
Answer: A: Ingestion 
Explanation: Ans. is 'a' i.e., Ingestion LISTEROSIS Mode of transmission; Food borne - Most common (most cases are due to serotype 4b) Nosocomial - In late onset neonatal infection. Foods implicated in infection include contaminated colesaw, pasteurized milk, soft cheese, pate, ready to eat turkey and pork productes, hot dogs, butter, prepared salads, undercooked chicken. Listerosis in human may present in several form :