The figure shows that the first case of measles had onset in the final week of January 2011.  During the second week of February two further locally acquired cases had onset of symptoms.  In the third week of February seven locally acquired and one overseas acquired cases began. In the following 15 days 13 locally acquired and one overseas acquired case became unwell. This marked the end of the outbreak, apart from one further overseas acquired case that had onset on 22 March. The date of the high school mass vaccination clinic was 8 March.