I watched a Youtube video last night about the food merchants in some of the markets in Wuhan and I noticed that most of them are using electronic payment methods to pay for goods. < Wechat Pay >
Ok, it is not Bitcoin, but if more merchants using Fiat currency can switch over to Bitcoin, you might see less infections. The reason for this is simple, because the Corona virus can be transmitted from person to person via cash being used on a daily basis.
People can also do online payments with Bitcoin to avoid handling physical cash and thus avoiding infection. It can also prevent people from being infected from a host of other viruses and bacteria that can survive for days on physical coins and notes.
This is just one more reason for people to move away from physical payment methods and shifting to a cash-less financial system in the future.

Your idea is great especially that we are facing this kind of situation where anyone can be infected easily by just receiving the fiat payment. If we will just use our cellphones and we will use digital payment then we can lessen the chance to be infected by other people who have the virus.
This is the right time for the infected area to use this kind of payment even if they will not use bitcoin as long as they will stay away from fiat payment as of the moment. And they can just resume the usage of fiat once they will be virus free already.