The ministry on Friday said it would extend a lockdown in the city until Aug. 1 and impose stricter restriction measures in the capital Hanoi from Saturday.
Financial markets were volatile earlier in the week as sentiment over the global economic outlook swung with each new Delta headline, although the prevailing mood was improving by late Friday.
Vietnam's 5% broken rice rates hit more than 16-month lows, falling sharply to $395-$400 per tonne on Thursday from a range of $465-$470 a week earlier