|When to suspect CA-MRSA|
|Severe respiratory symptoms with a rapidly progressive pneumonia evolving to acute respiratory distress syndrome|
|Chest radiograph showing multilobar infiltrates which may have cavitated|
|Known to be colonised with CA-MRSA or recent travel to an endemic area, such as North America, and recent contact with CA-MRSA|
|Belong to a group associated with increased rates of colonisation of CA-MRSA|
|Previous history or family history of recurrent furuncles or skin abscesses (two or more in past 6 months)|
CA-MRSA: community-acquired methicillin-resistant Staphylococcus aureus. Reproduced from 17 with permission from the publisher.