Fits clinical description Tick Yes if the case fits the clinical description of acute respiratory illness or influenza-like illness.

An acute respiratory illness is defined as recent onset of at least 2 of the following:

• Rhinorrhoea or nasal congestion
• Sore throat
• Cough
• Fever or feverishness

Influenza-like illness is defined as:

(i) history of fever, chills and sweating OR documented fever >37.8°C AND
(ii) cough OR sore throat

If not known or unavailable then tick the ‘Unknown’ box

*also termed novel influenza A H1N1 or influenza A (H1N1) 09