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: Social & Preventive Medicine
Presence of infectious arthropod agent on clothes or dressing is termed 
Select and explain. 
A. Contamination, B. Infestation, C. Infection, D. Contagion
A: Contamination
Answer: A: Contamination 
Explanation: Infection: Entry of organism and its multiplication and/or development in host
Infestation: Lodgement, development and reproduction of arthropods on surface of body or clothes
Contamination: Presence of infectious organism on body or in clothings/beds/ toys/surgical instruments/dressings/ in-animate objects
Contagion: Transmission of disease from one person to another by direct or indirect contact