A vaccine for Potomac Horse Fever is available. The vaccine does not prevent the disease but can reduce its severity. Horses should be vaccinated prior to the peak seasons of exposure. The clinical signs of Potomac Horse Fever are similar to those of many infectious diseases.
How often do you vaccinate for Potomac horse fever?
Vaccinated Adult horses: Annual revaccination. Horses in endemic areas: Veterinarians should consider yearly revaccination of two doses with a 3 to 4-month interval between doses.
How long is Potomac vaccine?
2) The immunity is short lived with the vaccine. The immune response to this particular vaccine is poor compared to other vaccines. It peaks at 3-4 weeks post vaccination but may continue to provide immunity for 3-4 months.
What causes Potomac fever in horses?
Potomac Horse Fever is a bacterial disease caused by the bacteria Neorickettsia risticii, which causes variable degrees (from mild to very severe) of fever, lethargy, poor appetite, diarrhea, mild colic, and laminitis in horses. It can can also infrequently cause abortion in pregnant mares.
What is the incubation period for Potomac horse fever?
Because the incubation period is 10-18 days, acutely ill animals often have an elevated PHF IFA titer. Vaccinated animals may have a titer in a similar range. Paired acute and convalescent titers will help sort out response to infection versus a vaccine or previous exposure.
Is Potomac fever fatal?
Potomac horse fever is a serious, potentially fatal disease caused by a bacteria called Neorickettsia risticii. First described in 1979 in Maryland near the Potomac River, the disease has since spread to numerous locations in the United States, Canada, and Europe.
Is Potomac fever in horses contagious?
Potomac Horse Fever is not contagious. If more than one horse at the same location contracts the disease, it is because of the environmental conditions that draw the vectors. The disease causes colitis, dehydration and diarrhea.
What vaccines do horses need?
Important Considerations and Conclusions. You should always consult with your veterinarian to develop a vaccine plan for your horse. Again, ALL horses should receive the core vaccines (rabies, EEE/WEE, tetanus, and West Nile Virus).
What is the horse disease strangles?
Strangles is a highly contagious disease of the equine upper respiratory tract caused by the bacterium Streptococcus equi subspecies equi (S. equi). The bacteria cross mucous membranes in the nose and mouth to infect lymph nodes where they cause abscesses that can eventually rupture.
When is the best time to get Potomac fever?
“Based on the current data regarding seasonality of the disease, I recommend vaccinating horses in the spring to catch those late spring and early summer cases and again in August to provide protection for the remainder of the season,” McKenzie said.
Why does my horse have diarrhea?
Some of the causes of diarrhea in a horse include: Behavioral, such as nervousness caused by being in a trailer or attending an event or the stress of moving to a new stable. Change of feed—either new feed the horse isn’t used to or overfeeding its regular feed. Access to lush pasture.