Scientists are warning about the continued transmission of dangerous H5N1 bird flu, saying that the virus is more widespread than believed.

Bird flu can also cause respiratory and classic flu-like symptoms, including cough, runny nose, fever, sore throat, body aches, headaches, fatigue, shortness of breath, and pneumonia, the CDC says. Some people in the U.S. who have caught bird flu have experienced respiratory symptoms as well.

The US The Centers for Disease Control and Prevention confirmed the country's first H5N1 bird flu infection in a child.

By Kristen Hwang, Calmatters An Alameda County child with mild upper respiratory symptoms tested positive for bird flu, state public health officials announced today. The potential infection is the first known case in California that does not appear to have originated from contact with infected cattle.

The vast majority of human cases of H5N1 bird flu in the U.S. have resulted from direct contact with animals, so a few simple precautions can keep most people's risk very low.

The Arizona Department of Health Services says poultry in a backyard flock located in Maricopa County has tested positive for Avian Influenza.

State health officials published a list of retailers in Los Angeles County that sold raw milk that has since been recalled after a retail sample of the product tested positive for bird flu virus. No one has reported illnesses from the lot of raw milk produced by Fresno-based dairy Raw Farm,

No illnesses associated with this lot of raw milk have been reported,” the state department of public health said in a statement. “Out of an abundance of caution, and due to the ongoing spread of bird flu in dairy cows,