For the TLDNR folks:
* Unlike the Flu, COVID-19 might be spread through the airborne route, meaning that tiny droplets remaining in the air could cause disease in others even after the ill person is no longer near
* The novel Coronavirus is called severe acute respiratory syndrome coronavirus 2, or SARS-CoV-2
* No vaccine is available at this time
* Coronavirus mortality rate is thought to be higher than that of most strains of the flu
* According to the WHO, coronaviruses may survive on surfaces for just a few hours or several days
* A recent study, considered the largest on COVID-19 cases to date, researchers from the Chinese Center for Disease Control and Protection, analyzed 44,672 confirmed cases in China between Dec. 31, 2019 and Feb. 11, 2020. Of those cases, 4.7% (2,087) were critical. Critical cases were those that exhibited respiratory failure, septic shock, and/or multiple organ dysfunction/failure.
* The basic reproduction/transmission number for the Flu (number of people the average person spreads it to) is 1.3, whereas with the Coronavirus it is between 2-3.
In the Live Science article, it gives a long list of mortality rates by location to note how these things have varied so far. While the Flu is around a 0.1% mortality rate, they've seen locations with the Coronavirus of 0.4%, 1.4%, and 2.9%
Extra material from my me - mortality rates:
* Flu: 0.1%
* SARS: 7%
* MERS: 34%
* Coronavirus: unknown, but see above for various estimates.