Note: current research demonstrates that 100% of the above inoculations retain effective immunity for 3 or more years. State and local laws sometimes continue to require annual inoculation.
rattlesnake envenomation vaccine. The rattlesnake vaccine available from Red Rock Biologics is given to dogs in two doses with yearly boosters recommended for best results. It is marketed as a safer and more economical alternative to antivenom treatment but does not negate the need for immediate medical treatment for such a bite. Vaccines for other species of poisonous snakes are being developed by Red Rock
Conclusion: adminster Core inoculations every three years.