The Wuhan coronavirus has sparked fears of a new global epidemic, as it spreads across Asia and around the world.
For those in China and Hong Kong, it's particularly reminiscent of the severe acute respiratory syndrome (SARS) outbreak that killed 774 people in 2003, more than 280 of them in Hong Kong.
Rapid spread: This novel coronavirus now has more confirmed cases that SARS did, suggesting it is spreading more rapidly -- which could be due to it being more contagious, or China being more interconnected than 2003.
Mortality: The coronavirus is far less deadly than SARS, or Middle East respiratory syndrome (MERS). The coronavirus' mortality rate is around 2.2%, compared to around 10% for SARS and 34% for MERS.
Instead, the coronavirus appears to be about as deadly as seasonal influenza, which claims the lives of thousands of people every year. A 2019 study by Chinese scientists showed that influenza in China has a mortality rate of 1.6% to 2.6%.
However, the mortality rate for the coronavirus may continue to change as more cases and possible deaths develop.