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:
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
Parainfluenza viruses
Influenza virus A
Respiratory syncytial virus
Mumps virus