Health officials in Marin County are investigating a possible H5N1 bird flu case in a child. Officials have been investigating since last week and are working with the California Department of Public Health an the Centers for Disease Control to determine how the child was exposed.

Marin County reports a possible bird flu case in a visiting child, with test confirmation from the CDC pending.

The patient was visiting the county from out of state during the Thanksgiving holiday, according to the public health office.

MARIN COUNTY, Calif. - Marin County Public Health is reporting a possible case of H5N1, also known as the bird flu, in a child. It's unclear when exactly the child potentially contracted the disease or where. The Centers for Disease Control and Prevention (CDC) is working on determining how the child was exposed.

The patient was visiting the county from out of state during the Thanksgiving holiday, according to the public health office.

Public health authorities are seeking to determine if a Marin County child stricken with flu could have potentially contracted the illness by drinking infected raw milk that was subject to a recall. The presumptive bird flu case was announced on Friday,

A child who became ill during a visit to Marin, prompting tests for avian influenza, had consumed unpasteurized milk, the county reported.

Public health authorities are seeking to determine if a Marin County child stricken with bird flu could have potentially contracted the illness by drinking infected raw milk that was subject to a recall.