Figure 4 Line graph demonstrates the rates for chicken pox by week of report and year, from 1 January 2016 to 31 March 2017, showing an irregular trend. For the same period in 2016 (January – March), the average rate for 2017 was similar at 0.1 notifications per 1,000 consultations compared to 0.1 notifications per 1,000 consultations in 2016.