From the gruniard. It must be right
https://www.theguardian.com/world/2020/mar/03/scott-morrison-calls-for-calm-as-coronavirus-prompts-panic-buying-at-supermarkets

I noticed powdered milk was out of stock where I shop, also handgel and wipes.

Mormons are supposed to stockpile food for one year. Not a bad idea.
It is estimated that the meals in the United States travel about 1,500 miles to get from farm to plate. It does not require much to create supply chain dislocations, for whatever reason.
Lack of widgets from Wuhan is but the tip of the iceburg.