As more cases of bird flu emerge across the country, public health leaders in New York City are watching warily -- and making preparations in case the virus becomes a more immediate threat.

The Centers for Disease Control and Prevention are monitoring the bird flu situation in the United States. Here's what to know and how to stay safe.

The last duck farm on New York's Long Island is facing an uncertain future after a bird flu outbreak forced the culling of nearly 100,000 ducks. The highly contagious H5N1 avian flu, otherwise known as bird flu,