This is arguably the first real take of the coronavirus outbreak situation by China - from an economic standpoint that is - and that is particularly worrying.
Remember, this is going by the assumption that the outbreak is likely to be controlled and contained by the end of Q1 this year. The risk here is that the virus may spread more wildly and have a more prolonged impact on the country and its economy.
In that lieu, keep in mind that when China sneezes, the rest of the world catches a cold - in this case, quite literally. But if the Chinese economy is set to suffer, expect that to weigh on global businesses/markets as well.
The response from risk to the headlines here are a little bit muted but I wouldn't rule out a follow through move later on once markets start to come to terms that the virus outbreak here may not just be more bark than bite.