For vaccinating healthy, susceptible sheep against Chlamydia Psittaci, a group of micro-organisms that cause enzootic abortion in ewes (EAE). Ewes should be vaccinated 60 days prior to breeding. Administer second dose 30 days later. Re-vaccinate anually. This vaccine may cause a granuloma at the site of injection. 60 day slaughter withdrawal. Note: This item is a refrigerated pharmaceutical. Please see our Shipping page for important information.