Vietnam has tightened quarantine regulations for imported Korean laying hens, introducing tests for highly pathogenic avian influenza, Newcastle disease, salmonella, and two types of E. coli. This initiative aims to reduce Vietnam's reliance on imports and support its domestic market. The new regulations have already affected Korean exports, with some shipments being canceled or discarded due to salmonella detection. The industry is worried about further export declines and is advocating for measures like diversifying export markets to lessen the impact.