The numbers are starting to be large enough to use statistics (this is not a good thing since that means a lot of people are sick and some have died). Thus, with some confidence we can say:
R₀ is about 2.5 (between 1.5 and 3.5). Compare with flu at about 2.5, or measles at about 15 (how many people catch it from one carrier)
Cases world-wide: 81, 110 as of 26 February
Deaths world-wide: 2,760
Mortality (once infected): 3.4% (as compared with flu at about 0.05%)
Mortality age distribution: From above 20% for those over 80 years to zero for those under 9 years. Covid-19 kills people who have compromised circulatory systems or lungs.