1. INFLUENZA VS COMMON COLD

2. Influenza versus common cold
Presentation
Influenza
Common cold
Clinical spectrum
Systemic
Local – nose and throat
Speed of onset
Sudden
Gradual
Fever
Generally high
Usually mild
Chills, myalgia, malaise, cough, sore throat
Sneezing, nasal congestion, sinusitis
Severity
Prostration
Course of illness
May be protracted
Complications
May be severe, e.g. pneumonia, exacerbation of underlying conditions
WHO Collaborating Centre for Influenza, Melbourne, Australia.

3. Influenza-like illnesses
Can be caused by:
influenza
common cold
pharyngitis
croup
tracheobronchitis
bronchiolitis
other respiratory viruses including:
respiratory syncytial virus
rhinovirus
parainfluenza virus
adenovirus pulmonary tuberculosis
fungal and cytomegalovirus pneumonia
various other atypical pneumonias

4. Differential diagnosis – influenza and influenza-like virus types
Influenza virus
Parainfluenza virus
RSV 3 2 4
Adenovirus
Rhinovirus
Coronavirus
Enterovirus 33
> 90
4–5
> 70
Virus types Different serotypes

5. By courtesy of APACI Asia-Pacific Advisory Committee on influenza www
By courtesy of APACI Asia-Pacific Advisory Committee on influenza