But she is not known to have had contact with infected birds.

Also last year, scientists found infected birds in 108 towns or cities.

Most human infections are the result of direct contact with infected birds.

Instead, it is from infected birds that are still alive or have recently died.

International health organizations now require that all infected birds be killed.

And in Massachusetts, officials last week reported their first infected bird.

Three people who worked with infected birds have been hospitalized.

Park workers from around the country are being trained to identify infected birds.

The government has said that 90 to 95 percent of the infected birds have come from the open farms.

Last week, 12 infected dead birds were found, raising the total to 51.