Weekly consultation rates for influenza-like illness in New Zealand, 2008-2010

*A weekly rate of less than 50 ILI consultations per 100,000 patient population is considered baseline activity. A rate of 50-249 is considered indicative of normal seasonal influenza activity, and a rate of 250-399 indicative of higher than expected influenza activity. A rate of over 400 ILI consultations per 100,000 patient population indicates an epidemic level of influenza activity.