http://www.bloomberg.com/news/2012-1...consumers.html

Two excerpts:

At Ngoc Sinh Seafoods Trading & Processing Export Enterprise, a seafood exporter onVietnam’s southern coast, workers stand on a dirty floor sorting shrimp one hot September day. There’s trash on the floor, and flies crawl over baskets of processed shrimp stacked in an unchilled room in Ca Mau.
Elsewhere in Ca Mau, Nguyen Van Hoang packs shrimp headed for the U.S. in dirty plastic tubs. He covers them in ice made with tap water that the Vietnamese Health Ministry says should be boiled before drinking because of the risk of contamination with bacteria. Vietnam ships 100 million pounds of shrimp a year to the U.S. That’s almost 8 percent of the shrimp Americans eat.

Using ice made from tap water in Vietnam is dangerous because it can spread bacteria to the shrimp, microbiologist Mansour Samadpour says, Bloomberg Markets magazine reports in its November issue.

“Those conditions -- ice made from dirty water, animals near the farms, pigs -- are unacceptable,” says Samadpour, whose company, IEH Laboratories & Consulting Group, specializes in testing water for shellfish farming.
Ngoc Sinh has been certified as safe by Geneva-based food auditor SGS SA, says Nguyen Trung Thanh, the company’s general director.
At Chen Qiang’s tilapia farm in Yangjiang city in China’s Guangdong province, which borders Hong Kong, Chen feeds fish partly with feces from hundreds of pigs and geese. That practice is dangerous for American consumers, says Michael Doyle, director of the University of Georgia’s Center for Food Safety.
“The manure the Chinese use to feed fish is frequently contaminated with microbes like salmonella,” says Doyle, who has studied foodborne diseases in China.
More here.