300 likes | 467 Views
Vaccinations. Heather Schneider DVM. Dr. Heather Schneider. 2011 Iowa State graduate Originally from a working cattle ranch in Wyoming Hobbies Learning Spanish Rodeo Knitting Reading. Vaccination basics. Basics. Core vaccines
E N D
Vaccinations Heather Schneider DVM
Dr. Heather Schneider • 2011 Iowa State graduate • Originally from a working cattle ranch in Wyoming • Hobbies • Learning Spanish • Rodeo • Knitting • Reading
Basics • Core vaccines • Tetanus, Rabies, Western and Eastern Equine Encephalomyelitis (WEE/EEE), and West Nile Virus (WNV) • Risk based vaccines • Anthrax, Botulism, Equine Herpes Virus (EHV-1/EHV-4), Equine Viral Arteritis (EVA), Influenza, Potomac Horse Fever, Rotavirus, and Strangles
Initial Vaccinations • Core vaccines • Adult horses • Initial 2 dose series 4-6 weeks apart • Re-vaccinate annually • Foals and Weanlings • Timing dependent on vaccination status of mare • Require 3 dose series
Initial Vaccinations • Risk based vaccines • Adult horses • Initial 3 dose series 4-6 weeks apart* • Annual to semi-annual revaccination • Foals and Weanlings • 3 dose series for most vaccines • Most given around 6 months of age
The must haves for every equid Core vaccines
Tetanus Courtesy of Dr. Beatrice Sponseller
Tetanus • Clostridium tetani • Non-contagious disease • Two different vaccines • Tetanus toxoid • Tetanus antitoxin • Booster annually or after injury
Rabies Courtesy of Dr. Beatrice Sponseller
Rabies • Viral disease caused by a large, bullet-shaped rhabdovirus • Spread by bite from rabid animal • Single dose initial • Revaccinate annually • Very good vaccine
WEE Courtesy of Dr. Beatrice Sponseller
WEE Courtesy of Dr. Beatrice Sponseller
WEE/EEE • Transmitted by mosquitoes • Fever and depression initially • Progresses to head pressing, blindness, muscle tremors
WEE/EEE • Vaccinate prior to mosquito season—Spring time best • Annual vaccination • 6 month revaccination • Horses in high prevalence area • Immunocompromised horses
West Nile Virus Courtesy of Dr. Beatrice Sponseller
West Nile Virus • Transmitted by mosquitoes • Mild fever, anorexia and depression • Gait abnormalities • Onset of neurologic signs are usually sudden • Personality changes • Muscle tremors
West Nile Virus • Vaccinate prior to mosquito season—Spring time best • Annual vaccination • 6 month revaccination • Horses in high prevalence area • Juvenile (<5 years of age) • Geriatric horses (>15 years of age) • Immunocompromised
Equine Herpes Virus • Transmitted by contact with infected horses and fomites • Two common subtypes • EHV-1 • Neurologic and respiratory signs • EHV-4 • Respiratory signs
Equine Herpes Virus • Vaccinate annually • Initial 3 dose series • 6 month revaccination • Juvenile (<5 years) • Horses on breeding farms or in contact with pregnant mares • Performance or show horses at high risk • Pregnant mares • Vaccinate 5, 7 and 9 months of gestation
Influenza • Highly contagious and transmitted through the air • Most commonly affects 2-3 year olds • Sudden onset of fever (103-105F), serous or mucopurulent nasal discharge, anorexia, depression and dry, deep cough
Influenza • Vaccinate annually • Initial series depends on type of vaccine used • Modified live intranasal vs. inactivated injectable • 6 month revaccination • Horses with on going risk of exposure
Potomac Horse Fever • Fever, anorexia, depression • Reduce gut motility/sounds proceed diarrhea • Diarrhea can be moderate to severe • Concurrent colic signs
Potomac Horse Fever • Exposure to waterways and rivers increases risk • Peak incidence in July and August • Vaccinate semiannually to annually • Initial 2 dose series • Revaccination intervals of 3-4 months in areas of high prevalence for disease
Strangles • Transmitted by contact with infected horses or fomites • Fever, lethargy, and serous nasal discharge • Affected lymph nodes usually are firm initially but soften before rupturing • Many affected will never have abscessed lymph nodes
Strangles • Semi-annual to annual vaccination • 2 dose series for intranasal vaccine • 40% of exposed vaccinated horses will still get sick
Resources • Dr. Beatrice Sponseller Iowa State University College of Veterinary Medicine • Equine Internal Medicine. Reed, etc al. 3rd edition. • American Association of Equine Practitioners (AAEP) www.aaep.org