Avian influenza spreads to new countries

Avian flu has reached new corners of the globe and become endemic for the first time in some wild birds that transmit the virus to poultry, according to veterinarians and disease experts, who warn it is now a year-round problem.

On Wednesday, Argentina and Uruguay each declared national sanitary emergencies after officials confirmed the countries’ first infections. Argentina found the virus in wild birds, while dead swans in Uruguay tested positive.

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