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.
This has a point somehow and aside from it will probably avoid possible transmission of virus it will make every transaction much faster than when paying using cash. However, in the case of China, they limit the use of crypto or bitcoin that is why it is not sure if their government will allow the use use of it as a currency.