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Skip Navigation LinksAll Horse Topics > Infectious Diseases > Piroplasmosis


Articles ( * = TheHorse.com members only )Date Posted
Piroplasmosis: Florida Restricts Texas Horses
Florida has enacted import restrictions on horses from Texas due to the ongoing investigation into equine piroplasmosis, Florida Agriculture and Consumer Services Commissioner Charles Bronson announced. Nearly 300 Texas horses have tested positive for Theileria equi, one of two organisms responsible for causing equine piroplasmosis. Florida ... Read full story
 11/20/2009
Equine Piroplasmosis Found in 11 States
Animal health authorities investigating an outbreak of equine piroplasmosis on a South Texas ranch have now located 317 positive horses. These horses include 288 on the index ranch, seven on other premises in Texas, one in Alabama, two in California, five in Florida, one in Georgia, five in Louisiana, one in Minnesota, two in North Carolina, three ... Read full story
 11/16/2009
Equine Piroplasmosis Reported in New Jersey
Two horses in New Jersey have tested positive for equine piroplasmosis. The animals were among four purchased in 2008 from a ranch in South Texas on which 288 horses have now tested positive for the tick-borne disease. "Additional testing on the imported horses and contact horses is under way," noted a statement from the New Jersey Department ... Read full story
 11/11/2009
Piroplasmosis: Texas Horse Owners Urged to Check Regulations Before Hauling
A number of U.S. states and Canada have imposed movement restrictions or additional entry requirements for horses from Texas after equine piroplasmosis, a tick-transmitted blood disease of equine animals, was detected in South Texas in mid-October. Equine piroplasmosis can be carried and transmitted by as many as 15 species of ticks. Although ticks ... Read full story
 11/4/2009
Piroplasmosis: Kentucky Requires Testing of Texas Horses
Due to the ongoing investigation into equine piroplasmosis in the state of Texas, the Kentucky Department of Agriculture's State Veterinarian's Office has opted to require testing of all horses from Texas entering the state of Kentucky. A statement released by the Kentucky State Veterinarian's Office Oct. 29 indicated that more than ... Read full story
 10/30/2009
Piroplasmosis: Canada Restricts Import of Texas Horses
Due to the ongoing investigation into equine piroplasmosis in Texas, Canada has restricted the import of horses from that state. The American Horse Council said in a statement that effective October 21, 2009, the USDA will not endorse any export health certificates for equines to Canada from Texas. Equines being exported to Canada from other states ... Read full story
 10/23/2009
Officials Release More Details on Texas Equine Piroplasmosis   *
A ranch in Kleberg County, Texas, is under quarantine after a 7-year-old Quarter Horse mare became ill and tested positive for equine piroplasmosis earlier this month. An additional 31 horses on the ranch have also tested positive. An Oct. 20 report issued to the World Organization for Animal Health by John Clifford, DVM, deputy administrator of the ... Read full story
 10/21/2009
Equine Piroplasmosis Reported on Texas Ranch  *
A tick-borne disease known as equine piroplasmosis has been confirmed on a ranch in South Texas. Additional testing is being conducted to determine the extent of infection. Horses on the ranch are quarantined to their premises, and a thorough disease investigation is under way. Equine piroplasmosis can affect horses, donkeys, mules, or zebras. It ... Read full story
 10/20/2009
Equine Disease Report: Second Quarter 2009  *
The International Collating Centre, Newmarket, England, and other sources reported the following disease outbreaks. Contagious equine metritis (CEM) was recorded in France, the United States, and the United Kingdom (UK). One case of Taylorella equigenitalis infection was confirmed in France. The number of CEM-carrier animals detected in the USA since ... Read full story
 10/1/2009
Missouri Equine Piroplasmosis Outbreak 'Resolved' in OIE Report   *
A Sept. 15 report on the cases of equine piroplasmosis earlier this year in Missouri and Kansas declares the outbreak resolved. Three positive horses that were removed from quarantine remain missing. (See the report.) In June animal health officials confirmed equine piroplasmosis in Missouri after a horse formerly stabled at the Raytown Equestrian ... Read full story
 9/16/2009
Equine Piroplasmosis Reported in Ireland   *
Animal health authorities in Ireland are reporting equine piroplasmosis among Thoroughbred racehorses in County Meath. Nearly 30 animals have tested positive for the disease, stated a report issued to the World Organization for Animal Health (Office International des Epizooties, or OIE) by Paddy Rogan, MVB, MRCVS, chief veterinary officer in the Department ... Read full story
 9/10/2009
Third Piroplasmosis Horse Reported Missing  *
A third horse that tested positive for equine piroplasmosis was illegally removed from quarantine in June, stated a report issued to the World Organization for Animal Health (Office International des Epizooties, or OIE) by John Clifford, DVM, deputy administrator of the USDA's Animal and Plant Health Inspection Service. See the report. In June ... Read full story
 7/27/2009
Piroplasmosis Horses Remain Missing, Canada Adds Equine Import Requirements  *
The two horses removed from piroplasmosis quarantine in Missouri on June 17 had not been located as of June 30, said Tim Cordes, DVM, senior USDA staff veterinarian for Equine Programs and national coordinator for Equine Diseases. Multiple agencies, including the USDA, Missouri Department of Agriculture, and the Federal Bureau of Investigation, are ... Read full story
 6/30/2009
Piroplasmosis Horses Removed from Quarantine  *
Two horses positive for equine piroplasmosis were removed from a quarantined stable in Raytown, Mo., Wednesday night, according to reports published in The Kansas City Star and other local news outlets. Five other positive horses were euthanized Thursday with their owners' consent. The Missouri Department of Agriculture is reported to be working ... Read full story
 6/19/2009
MDA Statement on Missing Piroplasmosis Horses   *
The following is a statement released by the Missouri Department of Agriculture June 18: The Missouri Department of Agriculture has announced that two quarantined horses that tested positive for equine piroplasmosis are missing from a Raytown, Mo., equine center, located in Jackson County. Equine piroplasmosis is a bloodborne disease only transmitted ... Read full story
 6/19/2009
Equine Piroplasmosis Reported in Missouri   *
A 7-year-old Quarter Horse gelding in Jackson County, Mo., is positive for equine piroplasmosis, according to a report issued to the World Organization for Animal Health (Office International des Epizooties, or OIE) by John Clifford, DVM, deputy administrator of the USDA's Animal and Plant Health Inspection Service. See the OIE report. According ... Read full story
 6/12/2009
Final Florida Piroplasmosis Quarantine Lifted   *
The last premises determined to have had horses infected with equine piroplasmosis (EP) was released from state quarantine Feb. 12, according to a statement released by the state's Department of Agriculture and Consumer Services (DOACS). The final premises was released after meeting the requirements that all positive horses be removed from the premises, ... Read full story
 2/24/2009
WEG Equine Piroplasmosis Protocol Released   *
After years in development, a plan that allows horses positive for equine piroplasmosis to enter the United States in order to compete in the Alltech 2010 World Equestrian Games was recently presented to the Fédération Equestre Internationale (FEI) General Assembly. The Games, to be held Sept. 25-Oct. 10, 2010, represent the world championships of ... Read full story
 12/12/2008
Two Piroplasmosis Quarantines Remain in Florida  *
Florida agriculture officials have released two more properties from equine piroplasmosis quarantine, according to a statement released on the state Department of Agriculture and Consumer Services (DOACS) Web site. Two properties remain under quarantine. The quarantined properties are in Polk and DeSoto Counties. They can be released from quarantine ... Read full story
 12/3/2008
Florida Piroplasmosis Investigation Wraps Up; Positive Horses Removed  *
According to a Nov. 5 statement released by the Florida Department of Agriculture and Consumer Services, none of the horses that tested positive for piroplasmosis during a recent investigation remain on Florida properties. Six quarantines remain in effect. The premises will remain under quarantine until they pass 60 days after exposure, tests on ... Read full story
 11/6/2008
Florida Piroplasmosis: Canada Changes Horse Import Rules  *
Florida agriculture officials are continuing to investigate cases of equine piroplasmosis in the state. According to a statement released Oct. 10 by the Department of Agriculture and Consumer Services (DOACS), the source of the infection has been determined and the exposed animals are under state quarantine. There have been no new positive animals ... Read full story
 10/13/2008
More Farms Released from Piroplasmosis Quarantine  *
Florida agriculture officials are releasing additional farms from equine piroplasmosis quarantine. There are currently 13 premises under state quarantine. One farm still has positive horses on the premises. At the height of the investigation, 25 farms were quarantined, including seven farms with positive horses. Approximately 200 horses have been ... Read full story
 9/29/2008
Seven Premises Released from Piroplasmosis Quarantine   *
Seven of the premises quarantined by Florida officials due to exposure to equine piroplasmosis have been released. Eighteen premises are still under quarantine. Positive horses are currently located at three of these properties, according to a statement released Sept. 19 by the Florida Department of Agriculture and Consumer Services (DOACS). In total, ... Read full story
 9/22/2008
Four Equine Piroplasmosis Quarantines Lifted in Florida  *
Four additional premises in Florida have been released from quarantine as all horses on those premises have tested negative for equine piroplasmosis. There are currently 15 premises still under quarantine. Five of those premises have at least one horse that tests positive for the disease. The Florida State Veterinarian's Office is continuing to investigate ... Read full story
 9/17/2008
Piroplasmosis in Florida: Some Quarantines Lifted   *
Florida agriculture officials have started lifting quarantines at the some of the properties with animals exposed to equine piroplasmosis. Three premises have been released due to negative testing on all horses, leaving 19 under state quarantine. Of these 19, five properties currently house positive horses. A total of 20 horses were confirmed positive ... Read full story
 9/12/2008
Piroplasmosis Update: 20 Positive, Tracing Exposed Horses  *
Florida agriculture officials announced Sept. 8 that 20 horses have been confirmed positive for the foreign animal disease equine piroplasmosis, but even though this might sound grim, the news isn't all bad. All of the positive horses have thus far been directly linked to one another, indicating that free-roaming insects have not played a role in ... Read full story
 9/10/2008
20 Horses Positive for Piroplasmosis, Investigation Ongoing   *
Two additional premises exposed to equine piroplasmosis came to light last weekend, according to a statement released by the Florida Department of Agriculture and Consumer Affairs (DOACS). Each property has one horse that tests positive for the disease. This brings the total number of horses positive for the disease in the state to 20 animals on ... Read full story
 9/9/2008
18 Florida Horses Positive for Piroplasmosis  *
The Florida Department of Agriculture and Consumer Services (DOACS) stated Sept. 5 that 18 Florida horses have now tested positive for equine piroplasmosis. These horses live on four premises. All have been directly connected to other positive horses. The DOACS has tested more than 160 horses on 18 premises. The quarantine on four of these premises ... Read full story
 9/6/2008
10 Florida Horses Positive for Piroplasmosis  *
The investigation into equine piroplasmosis conducted by the Florida Department of Agriculture and Consumer Services (DOACS) in conjunction with the USDA has now turned up 10 horses positive for the disease. These horses live on three properties, all of which have been directly linked to the property on which the first case was found. There are 17 ... Read full story
 9/4/2008
Two More Florida Horses Positive for Piroplasmosis  *
The Florida Department of Agriculture and Consumer Services' investigation into equine piroplamosis has uncovered two additional positive animals in Polk County. These two cases bring the number of positive horses to eight. These cases include animals on three properties. According to an official statement released by the Department, all of the positive ... Read full story
 9/1/2008
Officials Test More Than 90 Florida Horses for Piroplasmosis  *
The investigation into equine piroplasmosis in Florida is ongoing. The state's Department of Agriculture and Consumer Services released a statement Aug. 28 indicating that 11 premises have thus far been quarantined and more than 90 horses tested. Horses on two premises have tested positive for the disease. Four horses at the home barn of the horse ... Read full story
 8/29/2008
Vet Preparations in Progress for World Equestrian Games   *
While the attention of most equine enthusiasts was turned to Hong Kong for the equestrian events of the 2008 Beijing Summer Olympic Games, preparations were well under way for the next major international equine competition: the 2010 Alltech FEI World Equestrian Games (WEG). The World Equestrian Games are the championships of the eight equestrian ... Read full story
 8/26/2008
No New Piroplasmosis Cases, Canada Bans Horses from Affected County  *
The Florida State Veterinarian's Office is continuing to investigate the equine piroplasmosis (EP) case in Manatee County. While Tropical Storm Fay delayed some investigation efforts, additional samples were collected and tick inspections performed. Currently the only premises with evidence of EP is the one index premise in Manatee County. There ... Read full story
 8/25/2008
Horse on Contact Premises Positive for Piroplasmosis  *
According to an Aug. 25 statement from the Florida Department of Agriculture and Consumer Services (DOACS), a horse on a second property has tested positive for equine piroplasmosis. Florida Agriculture and Consumer Services Commissioner Charles H. Bronson announced Aug. 15 that a horse in Manatee County, Fla., had been diagnosed with equine piroplasmosis, ... Read full story
 8/25/2008
Foreign Disease Equine Piroplasmosis Found in Five Florida Horses  *
Equine piroplasmosis was eradicated officially from Florida (and, thereby, the United States) in 1988. So it came as a shock to many people in the equine industry to hear that a horse in Florida was confirmed positive for the disease last week. Now animal health officials are working to trace the source of this disease flare-up and contain it. According ... Read full story
 8/20/2008
Four More Florida Horses Positive for Piroplasmosis  *
From a Florida Department of Agriculture and Consumer Services Division of Animal Industry release: Testing performed on samples from horses on the index premises in Manatee County, Fla., have indicated that four additional horses on the premises are infected with the organism that causes equine piroplasmosis (EP). Read more about piroplasmosis ... Read full story
 8/19/2008
Equine Piroplasmosis Case in Florida   *
Florida Agriculture and Consumer Services Commissioner Charles H. Bronson announced Aug. 15 that a horse in Manatee County, Fla., has been diagnosed with equine piroplasmosis, an animal disease that the U.S. has been considered free of since 1988. Blood and tissue testing of a 7-year-old gelding that had been euthanized after a three-week illness ... Read full story
 8/18/2008
'Fever Ticks' Spreading Across Texas Could Have Equine Impact   *
Veterinarians from the Texas Animal Health Commission (TAHC) are worried because fever ticks (Boophilus microplus) capable of carrying and transmitting deadly cattle "tick fever" protozoans Babesia bigemina or Babesia bovis, have been detected on livestock or wildlife in 139 Texas pastures during the past 12 months. More than one million acres in Texas ... Read full story
 7/11/2008
Cardiac Arrhythmias and Piroplasmosis  *
Italian researchers have documented a rare case of cardiac arrhythmia in a horse with piroplasmosis. While it had been noted in other domestic animal species, equine cardiac dysfunction associated with piroplasmosis had not appeared in the veterinary literature. The case study appeared in the June 8 issue of the Veterinary Journal. Equine piroplasmosis ... Read full story
 9/30/2006
AAEP 2004:Infectious Diseases Forum  *
Veterinarians swapped ideas on hot topics in the realm of equine infectious disease in the Infectious Disease Forum at the 2004 American Association of Equine Practitioners Convention, held Dec. 3-8 in Denver, Colo. Steve Conboy, DVM, a private practitioner in Lexington, Ky., and Maureen Long, DVM, PhD, Dipl. ACVIM, assistant professor of large animal ... Read full story
 2/7/2005
Piroplasmosis Testing   *
Piroplasmosis is an infectious, tick-borne disease caused by one of two parasites, Babesia equi or Babesia caballi, which attack and destroy red blood cells in horses. The mortality rate can be as high as 20% among susceptible animals. Recovered horses become chronic carriers without clinical signs. The only treatment (a type of chemotherapy) is not ... Read full story
 2/1/2005
USDA Instituting New Blood Test for Equine Piroplasmosis  *
Effective Feb. 1, 2004, the USDA will institute a new blood test for determining the equine piroplasmosis status of horses upon entry into the United States. The competitive enzyme-linked immunosorbent assay (CELISA) is more sensitive than the Complement Fixation test (CFT), which is currently used to test for piroplasmosis. The CELISA has a greater ... Read full story
 1/19/2004
AAEP 2002: Infectious Diseases Subdued, Not Eradicated  *
In discussing anthrax, screwworms, and piroplasmosis, Irby said that the three disease are related in that each "can affect equids, has the potential to devastate domestic livestock, is present in many foreign countries, and may first be detected by veterinarians in private practice." Irby re-iterated that it is imperative that private practice veterinarians ... Read full story
 2/21/2003
USDA Exempts Iceland from Horse Testing Regulation  *
The U.S. Department of Agriculture's Animal and Plant Health Inspection Service published a final rule earlier this month that amends the regulations to exempt horses from Iceland from testing for dourine, glanders, equine piroplasmosis, and equine infectious anemia during the quarantine period following importation. This action is warranted because ... Read full story
 11/20/2001
Messages  *
There are three very important topics that need to be covered this month, all of which have to do with horses, horse owners, and horse health. And all have to do with communication and the importance of making sure that the message you want sent is the one being received. First, officials from the USDA and Georgia met with FEI (Federation Equine ... Read full story
 10/18/2001
Piroplasmosis: First Step On A Long Road  *
I'm not happy, but I am satisfied. I'm not happy because I still think there are more questions than answers about letting horses positive for piroplasmosis enter the United States and compete in the Olympics. I'm not happy because I think this country should stick by established regulations and not get in a position to agree to something just because ... Read full story
 10/16/2001
Piroplasmosis: Scientific Information Needed  *
Don't you just hate people who complain all the time and aren't willing to do something about the problem? Me, too. I have been harping on piroplasmosis in this column for the last two months, and we've been covering the controversy stirred up by this little parasite for a year or more. Because of this, The Horse: Your Guide To Equine Health Care, ... Read full story
 10/16/2001
Oversight and Interaction  *
The policies are stringent. A hard line seems to have been drawn. Responsibilities have been assigned. Excruciating details have been put forth. Now the big questions is: Who? Georgia and the USDA decided to grant waivers to allow piroplasmosis-positive horses to enter the United States later this year to compete in the Olympic games in Atlanta (see ... Read full story
 10/16/2001
Piroplasmosis: The Olympic Question  *
(The following information was presented by Lee Brooks, DVM, the state veterinarian for Georgia, at the American Horse Council's Horse Health Committee meeting. Following this information is a summary from Georgia and the USDA giving background information on piroplasmosis and the waivers under which the horses will compete in the Olympics.) Summary ... Read full story
 10/15/2001
Contagious Critters  *
Diseases from other animals pose a constant threat to our horses. Disease-causing agents, or pathogens, lurk in local wildlife, fly overhead in birds, and lay in the next field inside cows peacefully chewing their cuds. These disease agents--whether fungi, bacteria, or viruses--are just waiting for the opportunity to cross over into a horse. The diseases ... Read full story
 5/1/2001
USDA Proposes To Exempt Iceland From Horse Testing Regulations  *
The U.S. Department of Agriculture announced April 17 that it is proposing to exempt horses from Iceland from testing for dourine, glanders, equine piroplasmosis, and equine infectious anemia during the quarantine period following importation. The USDA reports the action is warranted because Iceland has never had a reported case of dourine, glanders, ... Read full story
 4/27/2001
Piroplasmosis Caught in Australian Quarantine  *
Detection of a horse positive for piroplasmosis caused significant concern at a Victoria, Australia, Quarantine facility in March. The situation made officials thankful that quarantine surveillance methods were already in place—plans which arose from concerns about seropositive horses which are to compete in the Sydney Olympics this September (see ... Read full story
 1/1/2001
Piroplasmosis Found In Australia   *
The following is a message that was released to the horse industry of Victoria, Australia, on March 31, from the Acting Chief Veterinary Officer: A horse was imported from Hong Kong toVictoria, and was found to be infected with piroplasmosis, a disease exotic to Australia. BACKGROUND Equine piroplasmosis (otherwise known as equine babesiosis) ... Read full story
 4/14/2000
The Battle of the Bugs  *
Isn't it funny how even those of us quite accustomed to finding the odd flea traversing the tummy of a barn cat or Jack Russell react with the utmost horror to the sight of something crawling on our horses? We don't tend to give external parasites--creepy little critters like mites, lice, and ticks-a lot of consideration in our day-to-day horse management, ... Read full story
 5/1/1998




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