A Zimbabwean man roasts maize for sale at the side of the road in the capital Harare, March 3, 2016. (Photo by Philimon Bulawayo/Reuters)





A Zimbabwean woman sells maize in the capital Harare, March 3, 2016. (Photo by Philimon Bulawayo/Reuters)





People look at seafood at a stall at a shopping district in Tokyo, Japan, March 14, 2016. (Photo by Yuya Shino/Reuters)





A shopper holding plastic bags walks out from a greengrocer's at Tokyo's Sugamo district, an area popular with the Japanese elderly, in Tokyo, Japan, March 14, 2016. (Photo by Yuya Shino/Reuters)





A shop clerk speaks to a shopper at a fish stall at a shopping district in Tokyo, Japan, March 14, 2016. (Photo by Yuya Shino/Reuters)





Packs of tuna are displayed at a fish stall at a shopping district in Tokyo, Japan, March 14, 2016. (Photo by Yuya Shino/Reuters)





A fish market worker waits for customers at Sakarya Street in Ankara, Turkey, March 15, 2016. (Photo by Umit Bektas/Reuters)





A man transports instant noodles by motorcycle to a market in Hanoi, Vietnam in this December 24, 2015 file photo. (Photo by Reuters/Kham)





A customer pays a vendor after buying vegetables at a market in a residential area in Mumbai, India, March 22, 2016. (Photo by Shailesh Andrade/Reuters)





A woman shops at a vegetable market in a residential area in Mumbai, India, March 22, 2016. (Photo by Shailesh Andrade/Reuters)





A customer pays for shrimp at a wet market in Singapore March 23, 2016. (Photo by Edgar Su/Reuters)





People shop for fish at a wet market in Singapore March 23, 2016. (Photo by Edgar Su/Reuters)





People shop for vegetables at a wet market in Singapore March 23, 2016. (Photo by Edgar Su/Reuters)





People shop for fish at a wet market in Singapore March 23, 2016. (Photo by Edgar Su/Reuters)





A vendor arranges fruits in the town of Marat Numan in Idlib province, Syria March 24, 2016. (Photo by Khalil Ashawi/Reuters)





Pork is displayed in the window of a butcher's shop at the trading centre in the village of Kogelo, west of Kenya's capital Nairobi, in this July 15, 2015 file photo. (Photo by Thomas Mukoya/Reuters)





A pork butcher packs a pig's head at a market in Beijing, China, March 25, 2016. An exodus of small pig farmers in China is prolonging an industry downturn that will see the world's biggest pork producer and consumer challenge Japan as the top importer in 2016 for the first time. (Photo by Jason Lee/Reuters)





A butcher selling pork returns change to a customer at a market in Beijing, China, March 25, 2016. (Photo by Jason Lee/Reuters)





Meat stalls are seen at a market in Beijing, China, March 25, 2016. (Photo by Jason Lee/Reuters)





A butcher cuts a piece of pork at a market in Beijing, China, March 25, 2016. (Photo by Jason Lee/Reuters)





A vendor cuts chicken at her stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor takes a nap at her stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor sells chili peppers at his stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





Vendors rest at their stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A woman does her shopping in a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor sells snacks at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor sits at his stall as he sells ducks at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor sells lemons at her stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A vendor sells chili peppers at his stall at a market in Bangkok, Thailand March 31, 2016. (Photo by Jorge Silva/Reuters)





A customer shops on the roadside in Kashmir, India, March 17, 2016. (Photo by Jaipal Singh/EPA)