Hib (Haemophilus influenzae type b)
Required for Form I-693 (USCIS medical exam) for adjustment of status, refugee/asylee status, and certain other immigration benefits.
What it protects against
Haemophilus influenzae type b (bacterial meningitis, epiglottitis).
Who must receive it
Required ages 2 months through 59 months ONLY.
Dose schedule
3–4 doses depending on vaccine brand: 2, 4, (6), 12–15 months.
Cost
$0 with insurance. Without insurance: $30–$50/dose; FREE for children via VFC.
See Where to get immigration vaccinations for free and low-cost options.
Side effects
Sore leg or arm, mild fever. Severe reactions rare.
Blood test alternative (titer)
No — vaccination record required.
Important notes
ONLY required for very young children (under 5). Adults are NOT required to have Hib for I-693 unless asplenia or other specific medical condition.
Bring to your civil surgeon
- Yellow international vaccination card (cartilla de vacunacion) if vaccinated abroad
- Pediatrician/clinic records from any US doctor visits
- State immunization registry printout if available
- Translation NOT required for vaccine cards — doses and dates are universal
Civil surgeons can administer missing doses during your I-693 exam, but pricing is typically HIGHER than going to a county health department or pharmacy beforehand.
Related
- Immigration medical exam (Form I-693) overview
- Where to get immigration vaccinations
- Vaccine costs with and without insurance
- Vaccine exemptions and waivers
- I-485 Adjustment of Status
Last verified: 2026-09-24.
General health and procedural information from CDC Civil Surgeon Technical Instructions and USCIS Policy Manual. Not medical or legal advice. Consult your physician for medical guidance and a licensed immigration attorney for case-specific questions.
Related procedural information
- Consulate of your country in the US — passport renewal, consular ID, document apostille
- ITIN — file federal taxes without SSN — for people with a US filing or reporting obligation who aren’t eligible for an SSN
- USCIS form library — federal immigration forms (I-130, I-485, N-400, etc.)
- Find an immigration attorney — pro bono lists + AILA + BIA-recognized
- Know Your Rights — ICE encounters — constitutional protections
USCIS Form I-693 medical exam context (2025-2026)
The USCIS Form I-693 (Report of Immigration Medical Examination and Vaccination Record) is required for adjustment-of-status applicants (Form I-485) and certain refugee/asylee categories. Civil Surgeons designated by USCIS conduct the exam. Find a Civil Surgeon at uscis.gov/tools/find-a-civil-surgeon. The civil surgeon sets the exam fee, and fees vary from one civil surgeon to another.
CDC’s Technical Instructions for Civil Surgeons (page last updated March 11, 2025) specify required vaccinations: tetanus-diphtheria, pertussis (Tdap/DTaP), MMR (measles-mumps-rubella), polio, varicella (chickenpox), influenza (seasonal), pneumococcal (age-dependent), Hib (children), Hepatitis A + B, rotavirus and meningococcal (children). HPV is NOT on the CDC required list — neither is zoster — so no civil surgeon can require an HPV series for immigration purposes. Which vaccines are required depends on the applicant’s age and vaccination history: each must be age-appropriate as recommended by ACIP for the general US population. A Form I-693 signed by a civil surgeon on or after November 1, 2023 stays valid only while the application it was filed with is pending (USCIS Policy Manual Vol. 8 Pt. B Ch. 4, effective June 11, 2025); one signed before November 1, 2023 keeps evidentiary value for 2 years from the signature date.
Verify the current USCIS Fee Schedule at uscis.gov/g-1055 (Form G-1055) before filing Form I-485. Tuberculosis (TB) screening with an IGRA blood test is required for all I-693 applicants 2+ years old; a chest X-ray is required after a positive IGRA, known HIV infection, or signs or symptoms of TB.
For Civil Surgeon designation questions or vaccination requirement disputes: USCIS Contact Center 1-800-375-5283 Monday-Friday 8:00am-8:00pm Eastern Time. Form I-693 (the civil surgeon places it in a sealed envelope): since December 2, 2024 it must be submitted with Form I-485, or USCIS may reject the I-485 — by mail, in the original sealed envelope; online filers open the envelope, upload the form and keep the original and envelope. If the application your Form I-693 was filed with is withdrawn or denied, you need a newly completed and signed Form I-693 for any future application.
For low-cost / free vaccination sources: community health centers (FQHCs at /benefits/community-health-centers-by-state/) provide vaccines on sliding-fee scale; many counties offer free immunization clinics. CDC Vaccines for Children (VFC) program: 1-800-232-4636 (1-800-CDC-INFO) for children whose parents/guardians cannot afford vaccines.