Dr Ayesha Verrall, Infectious Diseases Doctor and Epidemiologist at the University of Otago, Wellington says rapid, mass tracing is the single most important thing New Zealand can do to get out of lockdown and more importantly to stay out of it. She wants tracing to be scaled up, sped up, to become fully integrated, and augmented with smartphone apps. That means the ability to identify and trace the contacts of at least 1,000 cases a day. If not she warns the lockdown could be in vain.