SoCal Poultry Quarantine Expanded as Officials Work to Eradicate Virulent Newcastle Disease

"Sentinel" chickens are kept in areas of concern by the Riverside County Department of Environmental Health to detect the presence of West Nile Virus on April 25, 2007, in Hemet, Calif.(Credit: David McNew/Getty Images)

"Sentinel" chickens are kept in areas of concern by the Riverside County Department of Environmental Health to detect the presence of West Nile Virus on April 25, 2007, in Hemet, Calif.(Credit: David McNew/Getty Images)

State agricultural authorities are further restricting movement of birds as they work to eradicate virulent Newcastle disease from a large area of Southern California.

State Veterinarian Annette Jones on Wednesday modified a quarantine that requires reporting of sick birds and prohibits poultry owners from moving birds in all of Los Angeles County and in large areas of San Bernardino and Riverside counties.

The latter areas extend from the northern and southern borders of western Riverside County to the Salton Sea, including the Coachella Valley, and as far east as Yucca Valley in San Bernardino County. The northern boundary is State Route 58 at the Kern County line.

Authorities have been trying to stop the disease since May 2018. The number of euthanized birds is expected to soon surpass 1 million.

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