What is it ?
Infection due to Anaplasma phagocytophilia (formerly Ehrlichia).
When does it occur ?
Spring, Fall and Winter
Are infected horses contagious ?
No.
What are the symptoms ?
Fever, depression, decreased appetite, swelling of lower legs, jaundice, reluctance to move.
How do horses get infected ?
Through the bite of an infected tick.
What ticks spread the disease ?
Deer ticks (Ixodes) and possibly other types of tick as well.
How is it treated ?
Anaplasmosis is treated with tetracycline antibiotics, administered either intravenously or orally.
Are there lasting side effects ?
Once horses recover, there are no lasting side effects.
How can it be prevented ?
By avoiding tick bites through use of tick repellent products.
Can a horse get the infection again after recovering ?
Recovered horses usually have immunity that lasts up to 2 years, but can become infected again.
Is there a vaccine available to prevent Anaplasmosis ?
No.
