The Children’s Hospital at Westmead BHunter New England Population Health

Complacency is the greatest threat to successful immunisa-tion programs. This has recently been demonstrated in many countries in Europe with resurgence of vaccine preventable diseases that were previously well controlled, particularly measles.1 Thus in New South Wales (NSW), despite having a successful immunisation program, we must continue to review performance carefully, identify signals of compla-cency and strive to protect vulnerable members of our community with the wide range of vaccines that we have at our disposal. This issue of the NSW Public Health Bulletin presents the second in a series of annual reports which provide a comprehensive overview of the current epidemiology of vaccine-preventable diseases in NSW and the status of our immunisation program. 2010 was the third year of NSW’