Thu of HCMC’s District 8, who sells rice and pork online, has for the last three weeks been ordering twice the normal quantity stock due to surging demand.

"Before the outbreak customers used to buy 20 to 50 kilograms of rice at a time. Now they buy hundreds of kilograms."

There is rising demand for pork too. Before the outbreak began, it used to take Loan in Thu Duc District a week to sell a pig. Now it takes her two days, with many customers interested in easy to cook dishes such as gio, the Vietnamese sausage.

Retailers are seeing a surge in online demand for food and household products as the number of coronavirus cases rises in Vietnam, and people are advised not to leave home.

A survey done last month by market research company Nielsen Vietnam showed that half the people have reduced visits to supermarkets and traditional markets while a quarter spent more time shopping online.

Major retailer chains have also reported a big increase in online demand. Saigon Co.op, with over 800 outlets nationwide, has seen Internet and phone orders rise by 4-5 times.

Big C, with 35 outlets, also expects phone orders in March to triple from February.

Ride-hailing services like Grab and Be have introduced a feature that allows users to buy from local supermarkets using their motorbike drivers.