Mexico and Singapore have halted poultry product imports from Polk County, Missouri, after a case of avian flu was reported, according to the U.S. Department of Agriculture's Animal and Plant Inspection Service

Mexico stopped imports of raw poultry and poultry meat products derived from birds slaughtered on or after March 4, and Singapore stopped shipments of fresh or frozen poultry meat from birds in Polk County on or after March 30. There was a low-pathogenic influenza confirmed on a flock of turkeys on a single farm in Polk County, said Lyndsay Cole, a USDA spokeswoman. Further testing showed that the birds no longer have the flu strain.