Seems to me that 2 to 4 weeks of supplies isn't going to be enough, if this goes full-on pandemic. It takes ~2 weeks for symptoms to appear.
With no vaccination and an unknown number of contagious people moving around this isn't going to go away soon. If the .gov steps in and starts shutting things (transport, movement, etc.) down, I think they'll be shut down for quite a while - months?
Got more than 2 months food stored, a few hundred thousand gallons of water in the pond (and a lot of filters, bleach etc.), ammo (never enough), a couple of (fairly) steady sources of income w/o having to go to work. Gonna buy more long term storage type foods tomorrow.