<prompt> An infant develops cough and fever. Chest X-ray is suggestive of broncho-pneumonia. All of the following viruses can be the causative agents except:Parainfluenza virusesInfluenza virus ARespiratory syncytial virusMumps virus  <response>: d. Mumps virusRef: Nelsons 20e p 2088-2093, Ghai 8e p 379-381Viral causes of pneumonia in children:Of the respiratory viruses, respiratory syncytial virus RSV and rhinoviruses are the most common;Others include influenza virus, parainfluenza, adenoviruses, enteroviruses and human metapneumovirus. 