Planned for 30 days from midnight Wednesday, the emergency comes during a US surge in measles cases, linked to an anti-vaccination movement.
"We have already seen over 500 in the last couple of days," Rockland County Executive Ed Day said on CNBC TV. "People simply understand now that we are serious about this," added Day, whose district is 25 miles north of downtown New York. "We believe we are on a right path now to get at least a 93 percent immunization rate with the first shot," close to the level considered necessary to end the outbreak.
Although measles was declared officially eliminated from the United States in 2000, outbreaks have occurred in five states this year, according to the Centers for Disease Control and Prevention .
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