An infant develops cough and fever. The X-ray examination is suggestive of bronchopneumonia. All of the following viruses can be the causative agent, EXCEPT:: (A) Parainfluenza viruses, (B) Influenza virus A, (C) Respiratory syncytial virus, (D) Mumps virus
Answer is D. Mumps occur between the ages of 5 & 15. Infants are rarely involved due to presence of transplacentally acquired maternal mumps antibodies. Ref: O P Ghai Essential Pediatrics, 6th Edition, Page 209