4.1 Influenza (also known as flu) and common cold are both respiratory illnesses caused by different viruses; Influenza virus (types A, B, C) and Rhinovirus, respectively. The two illnesses have similar flu-like symptoms, yet there are differences. Differentiate these two illnesses in terms of:
a) Speed of onset
b) Fever,
c) Occurance
d) Clinical spectrum,
e) Complications
(5)