Two cats in separate New York City households have tested positive for bird flu, the city health department says.

Health authorities say the threat of infection for people remained low even amid the spread of H5N1 virus among birds and cattle nationally.

One of the cats infected with the bird flu was an 8-month-old kitten on the Upper West Side that consumed raw chicken from Savage Cat, a company that makes raw pet food. A veterinarian said the kitten had to be euthanized.