Analysis of the number of cases from the Diamond Princess suggests that COVID-19 is more contagious than seasonal influenza.

This can change based on the circumstances the outbreak is occurring in and it is expected this will be refined over time as more is known.

It has been established that individuals are contagious prior to the onset of symptoms, on average this is expected to be approximately 48 hours.

In the absence of dedicated control measures, it is expected that every case of diagnosed COVID-19 will generate a further 2 to 3 cases.