USDA’s Animal and Plant Health Inspection Service (APHIS) has reported additional vesicular stomatitis virus (VSV) affected facilities in California.
VSV causes blister-like lesions to form in the mouth and on the dental pad, tongue, lips, nostrils, hooves and teats of livestock. These blisters swell and break, resulting in infected animals refusing to eat and drink and showing signs of lameness.
On Oct. 25, APHIS announced eight new VSV-affected facilities (four confirmed, four suspected), with Mariposa County as a new affected area. The counties currently under quarantine include Fresno, Madera, Mariposa and Tulare counties.
Since the start of the outbreak in 2023, VSV has been identified in California, Nevada and Texas. Of the 236 total VSV-affected premises, 209 premises have completed the quarantine period with no new clinical cases. Twenty-seven premises remain quarantined in California.





