Line graph demonstrates the rates for chickenpox by week of report and year, from 1 January 2015 to 31 December 2016, showing an irregular trend. For the same period in 2015 (October – December), the average rate for 2016 was lower at 0.1 notifications per 1,000 consultations compared to 0.3 notifications per 1,000 consultations in 2015.