Category III Animal Bite Post-Exposure Prophylaxis Schedule
For a previously unvaccinated patient with Category III animal bite who received the first PVRV dose on [DATE], administer the remaining PVRV doses on Days 3,7, and 14 after the first injection (4-dose regimen), and give ERIG 40 IU/kg body weight on Day 0—but if Day 0 has passed, ERIG can still be administered up to and including Day 7. 1
PVRV Dosing Schedule
The vaccine schedule follows a 4-dose regimen for previously unvaccinated persons:
- Day 0: First dose (already given on [DATE])
- Day 3: Second dose
- Day 7: Third dose
- Day 14: Fourth dose
Each dose is 1.0 mL administered intramuscularly in the deltoid area for adults and older children, or the anterolateral thigh for younger children. Never use the gluteal area. 1
Important exception: If the patient is immunosuppressed, use a 5-dose schedule adding a fifth dose on Day 28. 1
ERIG Dosing and Administration
Dose: 40 IU/kg body weight (for equine rabies immunoglobulin) 2, 3, 4
Critical timing window: ERIG should ideally be given on Day 0 with the first vaccine dose. However, if it was not given on Day 0, it can still be administered up to and including Day 7 of the vaccine series. Beyond Day 7, do not give ERIG as antibody response to the vaccine is presumed to have begun. 1, 5
Administration technique:
- Infiltrate as much of the full dose as anatomically feasible around and into the wound(s)
- Any remaining volume should be injected intramuscularly at a site distant from the vaccine administration site
- Never administer ERIG in the same syringe or same anatomical site as the vaccine 1
Common Pitfalls to Avoid
Do not exceed the recommended ERIG dose (40 IU/kg)—excess immunoglobulin can suppress active antibody production 1
Do not skip ERIG if within Day 7—even if the first vaccine dose was already given, ERIG provides crucial immediate passive immunity until active antibody production begins 1, 5
Do not administer vaccine in the gluteal area—this results in diminished immunologic response 1
Minor delays of a few days between doses are acceptable—if a dose is missed, simply resume the schedule maintaining the same intervals between remaining doses. Do not restart the entire series. 5
Wound Care
Begin immediately with thorough cleansing of all wounds with soap and water. Use a virucidal agent like povidone-iodine solution if available. Avoid suturing bite wounds when possible to prevent deeper contamination. 1
The evidence strongly supports this 4-dose vaccine regimen as equally effective as the older 5-dose schedule while reducing costs and healthcare visits, with studies showing 100% seroconversion by Day 14 when combined with appropriate immunoglobulin administration. 3, 6, 7