In a question and answer format, UC Riverside public policy professor Richard Carpiano and medical school professor Dr.

The Tioga County Health Department announces some tips to help reduce the spread of Avian Influenza-H5N1 or bird flu.

Pet owners must take "proper precautions to reduce the risk of spread," said Dr. Susan Nelson, a veterinarian and professor.

When it comes to the potential of H5N1 avian flu picking up mutations that might lead to human-to-human spread, that "train has already left the station," warns 1 infectious disease expert.