Figure 4

Rates of intensive care admission in pregnant women. Weekly observed (blue) and predicted (green) rates of intensive care admission per 100,000 among pregnant women of respiratory, influenza or pneumonia, or influenza illness, New South Wales, Australia, 2007 to 2010. Respiratory diagnoses include a primary diagnosis of any respiratory illness or a primary or other diagnosis of influenza or pneumonia. Each influenza period is marked with vertical reference lines.