# AI recommends a booster vaccine for dogs without checking the vaccination history, risking overdose or adverse reaction

- **ID:** `pet-safety/ai-recommends-dog-vaccine-overdose`
- **Domain:** pet-safety
- **Category:** life_threatening
- **Error Code:** `PET-VAX-OD-002`
- **Verification:** ai_generated
- **Fix Rate:** 78%

## Root Cause

AI fails to query the dog's vaccination record or interval guidelines, leading to a recommendation that violates minimum intervals (e.g., 3 weeks between boosters) or administers a vaccine too soon after a previous dose, causing immune-mediated reactions or vaccine failure.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| VaccineGuidelines v4.2 | active | — | — |
| AAHA Canine Vaccination Task Force 2023 | active | — | — |

## Workarounds

1. **Implement a vaccination interval calculator: check the dog's age and last vaccine date, then apply AAHA guidelines (e.g., minimum 3 weeks between DHPP boosters). Example: if last vaccine was <3 weeks ago, defer and warn.** (85% success)
   ```
   Implement a vaccination interval calculator: check the dog's age and last vaccine date, then apply AAHA guidelines (e.g., minimum 3 weeks between DHPP boosters). Example: if last vaccine was <3 weeks ago, defer and warn.
   ```
2. **Require the owner to provide a veterinary record or use a microchip lookup service before recommending any vaccine.** (75% success)
   ```
   Require the owner to provide a veterinary record or use a microchip lookup service before recommending any vaccine.
   ```
3. **If records are unavailable, recommend a titer test to measure antibody levels instead of blindly boosting.** (80% success)
   ```
   If records are unavailable, recommend a titer test to measure antibody levels instead of blindly boosting.
   ```

## Dead Ends

- **** — Many core vaccines provide immunity for 3+ years; annual boosters can overstimulate the immune system and increase sarcoma risk. (65% fail)
- **** — Canine immune systems and vaccine intervals differ significantly; human schedules cause adverse reactions in dogs. (80% fail)
- **** — Owners often misremember dates; missing a 3-week interval can cause vaccine failure or anaphylaxis. (70% fail)