From VNexpress: HCMC residents rush to stockpile food amid new restrictions

I experienced this first-hand in a very small way today.  After reading the latest news about the upcoming stricter lockdown, I went down to the local convenience store to get more bottled water (tap water not being 100% safe to drink in Vietnam) only to find that the store was crowded with people, and the bottle water was sold out.  

That being said, how exactly this is going to play out in the next few days remains to be seen.  From Tuoi Tre News: Vietnam's biggest city issues stay-home order as COVID-19 deaths soar...which contains the key line:

The details of the order, which takes effect on Monday, have yet to be announced.