Vaccination Schedule Performance/ Stables Pleasure/Small Herd Broodmares Tetanus Annual/Injury Annual/Injury Annual/Injury Sleeping Sickness Annual Annual Annual West Nile Early Spring/Mid Summer Early Spring/Mid Summer Early Spring/Mid Summer Influenza Every 2-4 months Biannual Biannual Rhinopneumonitis Biannual Biannual 5,7,9 months of pregnancy Strangles Optional/Annual Optional/Annual Optional/Annual Rabies Optional/Annual Optional/Annual Optional/Annual Potomac Horse Fever At Risk Horses At Risk Horses At Risk Horses Equine Protozoal Myeloencephalitis Reserved For Special Cases or High Risk Areas Foals Should receive selected vaccinations at 3 and 4 months of age if there is minimal risk and again at 6 months of age if there is a high risk. Foals are considered adults at 1 year of age.