Don't want to sound alarmist, but for those of us with European Spring Marathons plans, please be careful and monitor the news.
Read on the European news today: with the virus spreading (particularly Italy) there are mentions about what measures will need to be taken for Spring marathons like Paris or London (decisions, as usual, would be announced as late as possible ...). Also talks about the fact that it is bang on during French and Italian Winter holidays (Feb-Mar) and UK mid-terms (late February) so many holidaymakers and movement to/from Italy and France, and it is expected that more cases will be reported in France within the next couple of weeks.
Nothing's been cancelled (except races in Lombardy, Italy), but the situation is rapidly changing so stay informed.