Mexico's social programs, food supply in particular, will continue as normal during the shutdown of business to combat the A/H1N1 flu, Social Development Minister Ernesto Cordero said on Thursday.

The state-run subsidized food distribution firms Distribuidora Conasupo and Leche Indistrializada, as well as the state-owned supermarket chain Diconsa which owns 22,300 stores, will continue to supply clients, Cordero said.

"We have ensured the supply of staple foods for several months, and there will be no problem with the supply," he added.

The state-run firms' nurseries and community centers will close until May 6, he said.

Some stores in Mexico City experienced panic buying of tinned goods and water on Tuesday and Wednesday, after a rumor spread by email that food stores will be shut down.

Mexico City, the hardest hit by the new strain of A/H1N1 flu, has ordered the shutdown of businesses and public places, including dancing halls, bars, sports centers, arts centers, cinemas and parks. Restaurants are still allowed to open, but only serve take-away food.

The Mexican government called on Wednesday for non-essential services to shut down between May 1-5 to help combat the flu outbreak.