Canine Influenza H3N2 (CIV H3N2) outbreak
From July to September 2021, there have been over 1000
confirmed and suspected cases of CIV H3N2 reported in LA
County and 5 dogs have died from the disease.
This outbreak is spreading rapidly throughout LA County,
affecting many pet boarding and daycare facilities. Some pets
have also been infected at dog parks, while on walks, and
other places where they come near other dogs.
Clinical signs include: cough, fever, sneezing, discharge from
the nose, lethargy and loss of appetite. Signs vary from no
symptoms to developing severe or fatal pneumonia.
Dog can get sick from direct contact with other dogs that are
infected, through coughing or sneezing, or by contact with
contaminated objects (clothing, shoes, food and water bowls,
Testing for the virus is available from your veterinarian.
Dogs with CIV H3N2 can be contagious to other dogs for
several weeks after recovery.
Canine leptospirosis outbreak
From July to September 2021, 107 confirmed and 16 suspected
cases of leptospirosis have been reported and 6 dogs have died
from the disease.
Most of the cases are associated with places where dogs
gather (boarding, daycare, dog parks). Some cases have been
exposed on walks around their neighborhood.
Clinical signs include: lack of energy, loss of appetite,
urinating excessively, drinking excessively, and vomiting.
Some dogs do not have symptoms. A number of cases
progress to severe kidney or liver damage and require
Dogs can get sick when they have contact with the bacteria
either in the soil, in the water, or in the urine of infected dogs
Testing for this disease is available from your veterinarian.
Leptospirosis is zoonotic. Humans can contract this disease
from infected pets by exposure to the pet’s urine. Gloves
should be worn when cleaning up urine from an infected pet.
Protect your pet and help stop
the spread of these diseases:
Vaccinate dogs against both
CIV H3N2 and leptospirosis,
especially before entering
boarding or daycare facilities
or coming in contact with
Keep sick or infected dogs at
- For CIV H3N2 – keep sick
dogs home for 28 days
from the first day of
For leptospirosis – keep
dogs at home until
medication is finished.
For more information:
Download this article