Unlike SARS of 2003, the case fatality ratio for COVID-19 [3][4] has been much lower, but the transmission has been significantly greater, with a significant total death toll.[5][3] COVID-19 typically appears with about seven days of flu-like symptoms followed by some people progressing to symptoms of a viral pneumonia requiring admission to hospital.[3] From 19 March, COVID-19 was no longer classified as a "High consequence infectious disease".[4]