Can a 10‑month‑old infant receive the rabies vaccine?

Yes, absolutely give the rabies vaccine to a 10-month-old infant if there is a rabies exposure.

Rabies post-exposure prophylaxis (PEP) regimens are explicitly applicable to persons of all age groups, including infants and young children, with no lower age limit specified. 1

Key Points for Administering Rabies Vaccine to a 10-Month-Old

Dosing and Administration

• Same dose as adults: The 10-month-old receives the full 1.0 mL dose per injection—children receive the same vaccine volume as adults 1
• Injection site: Use the anterolateral aspect of the thigh for infants and small children (the deltoid is reserved for older children and adults) 1
• Never use the gluteal area: This can result in diminished immune response and potential vaccine failure 1, 2

Post-Exposure Prophylaxis Schedule (If Previously Unvaccinated)

For an unvaccinated 10-month-old with rabies exposure:

1. Immediate wound cleansing: Thorough washing with soap and water for 15 minutes, plus virucidal agent (povidone-iodine) if available 1, 2

2. Human Rabies Immune Globulin (HRIG):

   • Dose: 20 IU/kg body weight
   • Infiltrate as much as anatomically feasible into and around the wound(s)
   • Remainder given IM at a site distant from vaccine administration
   • Must be given on Day 0 (can be given up to Day 7 if initially missed) 1

3. Rabies Vaccine Series:

   • 4 doses total: Days 0,3,7, and 14 1
   • Each dose is 1.0 mL IM in the anterolateral thigh
   • Use HDCV (human diploid cell vaccine) or PCECV (purified chick embryo cell vaccine)

Pre-Exposure Prophylaxis Considerations

While the question asks about giving the vaccine (implying possible pre-exposure vaccination), the FDA label specifically states: "Vaccination is recommended for children living in or visiting countries where exposure to rabid animals is a constant threat. Worldwide statistics indicate children are more at risk than adults." 2

Research supports pre-exposure vaccination in infants:

• A study demonstrated safe and effective administration of rabies vaccine to infants as young as 2 months when given with routine DTP-IPV vaccines 3
• Pre-exposure vaccination in 12-18 month-old children showed adequate immune response and long-term protection 4, 5

Critical Pitfalls to Avoid

1. Do NOT reduce the vaccine dose thinking the infant is too small—full 1.0 mL doses are required 1
2. Do NOT skip HRIG if this is post-exposure prophylaxis—both vaccine and HRIG are essential for unvaccinated persons 1
3. Do NOT delay treatment waiting for animal observation—if exposure warrants PEP, begin immediately 1
4. Do NOT use the gluteal site even though the infant is small—use the thigh 1, 2

Safety Profile

Modern cell-culture rabies vaccines (HDCV, PCECV) have excellent safety profiles in children, with adverse reactions being uncommon 6. No serious adverse effects were reported in studies of infants receiving rabies vaccination 3, 5.

The bottom line: Rabies is 100% fatal once symptoms begin, but PEP is universally effective when administered promptly and appropriately. 6 There is no age-based contraindication to rabies vaccination—the 10-month-old should receive the full standard regimen based on exposure status.