Lyme disease vaccine for dogs: is it worth it?
The Lyme vaccine protects dogs against Borrelia burgdorferi, the bacterium transmitted by the Ixodes tick (black-legged tick / deer tick). Whether your puppy needs it depends almost entirely on your geographic location and outdoor exposure. In high-risk US regions, it is widely recommended. In the UK, tick-borne Lyme disease is present but the vaccine is not routinely given.
US Lyme disease risk by region
Northeast US (Maine, Vermont, New Hampshire, Massachusetts, Connecticut, Rhode Island, New York, Pennsylvania, New Jersey, Maryland, Delaware). Upper Midwest (Minnesota, Wisconsin, Michigan).
Virginia, North Carolina, Ohio, Indiana, Illinois. Expanding tick ranges as climate shifts north and west. Check CDC tick surveillance maps annually.
Western US (California has ticks but lower Lyme prevalence), Florida (high ticks, different species), central and southern states.
Lyme vaccine schedule and cost
| Dose | Timing | Cost (US) | Notes |
|---|---|---|---|
| Initial dose | 12--13 weeks (given with DHPP dose 3) | $35--70 | First Lyme dose. Begin at least 2-4 weeks before tick season peak. |
| Booster (2nd dose) | 16 weeks (3-4 weeks after initial) | $35--70 | Required for primary immune response. |
| Annual booster | Every 12 months | $35--70 | Lyme immunity requires annual boosters due to shorter duration. |
Vaccine vs tick prevention: both or either?
The Lyme vaccine and tick prevention products (NexGard, Simparica, Bravecto, Seresto collar) target the same disease via different mechanisms. They are complementary, not mutually exclusive:
- Tick prevention products kill or repel ticks before they can transmit Lyme (or other tick-borne diseases: Anaplasmosis, Ehrlichiosis, Rocky Mountain Spotted Fever). They protect against all tick-borne diseases, not just Lyme.
- Lyme vaccine provides specific protection against B. burgdorferi even if a tick bites and transmits (tick prevention products may not kill ticks within the 24-48 hour attachment window required for transmission in all cases).
- For dogs in high-risk Lyme regions, AAHA 2022 recommends both: a year-round acaricide (tick prevention product) plus the Lyme vaccine.
- For dogs outside high-risk regions, a year-round acaricide alone is usually sufficient and covers a broader range of tick-borne diseases.
UK dog owners: the UK Lyme vaccine is not commercially available. The primary prevention strategy in the UK is tick checking after walks and the use of licensed acaricides (Bravecto, NexGard, Frontline Tri-Act). The Ixodes ricinus tick found in UK forests and grassland can transmit Lyme, but prevalence is lower than in the US Northeast.