If your mare received her booster shot 30 days prior to foaling, your foal should receive its first Eastern, Western, Tetanus & West Nile at 4-5 months old. Flu/Rhino vaccine should start at 6 months. You should de-worm with Safeguard or Panacur the first couple de-wormings. You should start at 1 months old and continue monthly for the first 6 months or so. At 5 month & 6 months I will use Ivermectrin then switch to a every 3 month program alternating between Ivermectrin and Strongid. You may want to contact your vet to see if any additional vaccinations are needed in your area. ALl vaccination will need boosters usually in 4 weeks and some again in another 4 weeks.