Marin officials concerned about avian virus spread

The avian flu has made the jump to cattle, affecting livestock in at least nine states. While the virus has yet to appear in California cattle, experts in Marin County find the progression concerning.

The H5N1 virus, also known as HPAI or avian flu, usually only affects wild birds and poultry. However, in the beginning of April, the virus appeared in cattle and then in some people who worked closely with them. Experts in Marin County stress that it is mainly an occupational hazard, and...