The respiratory' syncytial virus
Croup tLarvngotracheobronchitis
o Croup is a viral infection of upper respiratory tract,
o Children between the age of 1-5 years are affected,
o Para-influenza type I virus is the most common causative organism.
o Other viruses implicated in causaction are RSV, influenza virus, Adneovirus and Rhinovirus.
The respiratory' syncytial virus
The para influenza virus
The adenovirus
The coronavirus