Status: California was Certified Free (Stage 3) in the
National Swine Brucellosis Eradication Program in
1980. Only four states that are not classified as Free
- TX, AR, FL, and LA.
California Case Investigation Timeline:
• 11/4/03 - Blood samples from 3 boars killed in
Stanislaus County indicated brucellosis infection.
• 11/18/03 - Blood samples from 2 sows killed in
Fresno County indicated brucellosis infection.
• 12/3/03 - Both sets of animals traced to a small
swine herd in Tulare County. Herd quarantined.
• 12/9/03 - Blood sample herd - results indicated an
• 12/10/03 – Develop herd plan - necropsy the
sows and boars; incinerate their carcasses;
market feeder pigs directly to local slaughter
markets after informing USDA; start traceback.
• 12/15/03 - Funds to depopulate the sows and
boars approved by USDA.
• 12/18/03 – Complete depopulation of sows and
boars. Necropsy revealed lesions compatible with
brucellosis. Carcasses incinerated.
• 12/18/03 - State public health and Tulare, Fresno
and Stanislaus County health officials notified.
• 1/14/04 – Notice requiring a negative official
brucellosis test within 30 days on all breeding
swine destined for exhibition in California.
• 1/28/04 – Tests confirmed infected herd.
• Trace all swine moving into and out of the herd
over the last 3 years.
• Test all herds from which sows and boars were
purchased into the infected herd.
• Restrict exposed animals - quarantine and move
them under permit to slaughter.
Impact of Case on California:
If a second infected herd is detected, California may
lose its swine brucellosis Free status, requiring a
negative official brucellosis test before breeding swine
leave the state. The producer must pay for the testing
and the costs of delayed movement.
Swine Brucellosis Information:
Cause: Bacteria Brucella suis.
Signs: Abortions, weak piglets, infertility, lack of
sexual drive and orchitis in boars