California: Your Gateway to International Travel Health
A complete guide for California-based travelers preparing for international trips — vaccines, regulations, clinics, and expert resources across the state.
California & International Travel Health
California is the busiest international travel state in the U.S., with major global gateways including Los Angeles International Airport (LAX), San Francisco International Airport (SFO), and San Diego International Airport (SAN). For Californians traveling abroad for tourism, business, education, volunteering, cruises, adventure trips, or visiting friends and relatives, travel health preparation should begin well before the departure date.
The state offers an exceptional network of travel health services through academic medical centers, private travel clinics, county public health systems, and CDC-recognized yellow fever vaccination providers. This guide brings together the key travel-health information a California traveler needs before heading overseas.
Healthcare in California for Travelers
California provides one of the strongest travel-health infrastructures in the country. Residents can access pre-travel consultations, routine immunization review, malaria prescriptions, destination-specific vaccine counseling, and post-travel assessment through academic travel clinics, private vaccine chains, occupational health departments, and many hospital-based infectious disease programs.
State Health Authority
The California Department of Public Health (CDPH) oversees immunization policy, maintains the state school immunization framework, and certifies authorized yellow fever “uniform stamp” holders who can administer vaccine and validate the International Certificate of Vaccination or Prophylaxis (ICVP).
Academic Travel Medicine
UCLA Health and Stanford Health Care offer specialist travel medicine services including pre-travel evaluation, vaccines and medications tailored to destination, malaria prophylaxis, altitude advice, and assessment of illnesses after travel.
Private Travel Clinics
Passport Health operates a broad California network with locations in Los Angeles, Sacramento, San Diego, San Francisco and many other cities. These clinics offer yellow fever, typhoid, rabies, hepatitis A/B, Japanese encephalitis and additional travel vaccines.
Vaccine Regulations in California
California has one of the more structured school immunization frameworks in the United States. For outbound travel, however, entry rules are set by the destination country rather than by the state itself. California’s main role for travelers is certifying yellow fever providers and maintaining strong routine vaccination standards.
School Entry Requirements
Children in California must receive required immunizations to attend public and private schools and child-care facilities. Required vaccines generally include DTaP/Tdap, polio, MMR, hepatitis B, and varicella according to age and grade rules.
Medical Exemptions Only
California does not allow new personal-belief exemptions for school and child-care entry. New medical exemptions must be issued through CAIR-ME by a California-licensed MD or DO and must meet state criteria.
International Travel Rules
California does not require residents to be vaccinated before leaving the state, but many countries require or recommend specific vaccines. Yellow fever remains the classic legal requirement for entry to parts of tropical Africa and South America.
Routine Vaccines for Children in California
California follows nationally recommended childhood and adolescent immunization schedules. For travel medicine, routine vaccines matter just as much as travel-specific shots. Measles, polio, hepatitis A, and meningococcal disease remain important international risks, especially for families visiting regions with outbreaks or lower immunization coverage.
| Vaccine | Disease(s) Prevented | Typical Schedule | Notes for Travelers |
|---|---|---|---|
| DTaP / Tdap | Diphtheria, Tetanus, Pertussis | 5 childhood doses; adolescent Tdap booster | Important for wound and respiratory protection during international travel |
| Polio (IPV) | Poliomyelitis | 4 doses in childhood | Some travelers to polio-affected areas may need an adult booster before departure |
| MMR | Measles, Mumps, Rubella | 2 doses | Measles remains one of the most important routine vaccines for international travel |
| Varicella | Chickenpox | 2 doses | Important for children and teens without prior disease or vaccination history |
| Hepatitis B | Hepatitis B virus | 3-dose infant/childhood series | Essential baseline protection for travel, especially for longer stays or medical care abroad |
| Hepatitis A | Hepatitis A virus | 2 doses beginning at 12 months | High-priority vaccine for travel to many destinations with food- and water-borne risk |
| Hib | Haemophilus influenzae type b | 3–4 doses | Important routine pediatric protection, especially for younger children |
| PCV | Pneumococcal disease | 4-dose series | Helps reduce severe bacterial disease risk during travel |
| Rotavirus | Severe diarrheal disease | 2–3 doses in infancy | Relevant because diarrheal illnesses remain common in many travel destinations |
| MenACWY | Meningococcal disease A, C, W, Y | 11–12 years; booster at 16 | Required for Hajj/Umrah and important for parts of sub-Saharan Africa |
| HPV | Human papillomavirus | 2–3 doses beginning age 11–12 | Not travel-specific, but part of complete adolescent preventive care |
| Influenza | Seasonal influenza | Annually | Seasonality differs by region and hemisphere; timing matters for travel |
| COVID-19 | COVID-19 | According to current CDC age guidance | Destination policies can change; verify current rules before departure |
Routine Vaccines for Adults in California
Adult travelers should not assume childhood immunizations remain sufficient for life. California travel clinics typically review tetanus status, influenza, COVID-19, hepatitis A and B, shingles, pneumococcal vaccination, and any destination-linked concerns such as meningococcal protection or a polio booster.
Td / Tdap Booster
Adults should stay current with tetanus-containing boosters, generally every 10 years. Travel injuries, trekking, rural exposure, and minor wound care abroad all make this review important.
Every 10 yearsInfluenza
Annual flu vaccination remains a key routine recommendation. Travelers crossing hemispheres or traveling during regional flu season should review timing carefully.
AnnualCOVID-19
COVID-19 vaccination recommendations are updated over time. California travelers should confirm the current CDC age/risk guidance and any destination-specific documentation requirements.
Current guidanceHepatitis A & B
Travel clinics frequently prioritize hepatitis A and B for adults who were never vaccinated or have incomplete records. Hepatitis A is especially relevant for food- and water-related exposures.
Catch-upMeningococcal
Required for Hajj/Umrah and recommended for some travelers to Africa’s meningitis belt, students in group settings, and certain higher-risk adults.
Risk-basedPneumococcal & Shingles
Older adults and those with certain conditions may need pneumococcal vaccination and shingles protection. Travel is a good time to update general preventive care.
Age / risk basedThe Three Categories of Travel Vaccines
California travel clinics generally divide travel immunization planning into three practical groups: routine vaccines, vaccines required for legal entry, and vaccines recommended because of itinerary-specific risk.
| Travel Vaccine | Category | Key Destinations | Notes |
|---|---|---|---|
| Yellow Fever | Required | Tropical Africa, parts of South America | Must be administered by an authorized yellow fever stamp holder; certificate becomes valid after 10 days |
| Typhoid | Recommended | South Asia, Southeast Asia, Africa, Latin America | Available as oral or injectable vaccine; commonly recommended for visiting friends and relatives |
| Japanese Encephalitis | Recommended | Rural Asia and parts of Southeast Asia | More relevant for longer stays, outdoor exposure, and rural travel |
| Rabies (pre-exposure) | Recommended | Asia, Africa, Latin America; remote itineraries | Important for animal contact risk and destinations with limited access to urgent post-exposure care |
| Cholera | Recommended | Selected high-risk destinations | Used selectively depending on destination and humanitarian or outbreak-related travel |
| Meningococcal ACWY | Required / Recommended | Saudi Arabia (Hajj/Umrah), Africa’s meningitis belt | Legal requirement for some pilgrims and an important risk-based vaccine elsewhere |
| Hepatitis A | Recommended | Many low- and middle-income destinations | One of the most commonly recommended travel vaccines for U.S. travelers |
| Malaria Prophylaxis | Prescription Rx | Sub-Saharan Africa, South and Southeast Asia, parts of Latin America | Not a vaccine; medication choice depends on region, resistance, duration, and medical history |
Main Travel Health & Vaccine Centers in California
California’s travel-health capacity is unusually broad. Academic and private travel clinics serve the Los Angeles Basin, Bay Area, Sacramento region, Silicon Valley, San Diego, and multiple inland centers. Below are representative providers and major hospitals relevant to travelers.
Los Angeles
Los Angeles / Westwood area, UCLA Health network
UCLA’s travel clinic offers pre-travel evaluation, vaccines and medications specific to destination, travel health advice, and consultation for travel-related infection concerns. It is one of the strongest academic travel-medicine options in Southern California.
5455 Wilshire Blvd, Suite 1807, Los Angeles, CA 90036
(323) 297-0700
Full travel vaccine services including yellow fever, typhoid, hepatitis A, rabies, and destination-specific counseling.
757 Westwood Plaza, Los Angeles, CA 90095
Major academic hospital and referral center linked to UCLA infectious disease and travel medicine expertise.
San Francisco / Bay Area
2645 Ocean Ave, Suite 206, San Francisco, CA 94132
(415) 689-4823
Travel health clinic providing yellow fever and other travel vaccines for San Francisco travelers and nearby Bay Area residents.
International Terminal, Level 3 A Side, San Francisco International Airport
Located in the international terminal before security, this clinic is useful for airport-based medical support, though routine pre-travel planning is still best completed in advance through a dedicated travel clinic.
UCSF remains one of California’s leading academic health systems and a key referral destination for complex infectious disease and specialty care needs.
Palo Alto / Silicon Valley
211 Quarry Rd, Palo Alto, CA 94304
(650) 736-5700
Stanford’s clinic offers expert pre-travel consultation, travel immunizations, malaria prophylaxis, traveler’s diarrhea guidance, altitude advice, and treatment for illnesses contracted abroad.
Palo Alto, CA
Major tertiary and quaternary care center with strong infectious disease support and advanced specialty referral services for returned travelers or complex medical cases.
Sacramento / Northern Interior
2233 Watt Ave, Ste 340, Sacramento, CA 95825
(916) 277-9383
A convenient private travel clinic serving the Sacramento region with yellow fever, typhoid, and additional travel-vaccine services.
Sacramento, CA
Major academic medical center and important Northern California referral hospital for infectious disease and complex medical care.
San Diego
2525 Camino Del Rio South, Suite 325, San Diego, CA 92108
(619) 293-3963
Provides yellow fever and other travel vaccines, itinerary review, and destination counseling for Southern California and cross-border travelers.
11650 Iberia Place, Suite 110, San Diego, CA 92128
(619) 295-5326
Additional travel-vaccine access point serving North County and greater San Diego.
Major academic and specialty health system serving returning travelers and complex infectious disease needs.
📍 California Travel Health Centers & Major Hospitals
Click any marker to view details and get Google Maps directions. Orange = Travel Health Clinic | Blue = Major Hospital
Pre-Travel Health Checklist for California Travelers
Whether you are flying from LAX, SFO, SAN, Sacramento, San Jose, Oakland, or a regional California airport, this preparation timeline helps ensure you leave with the right protection and paperwork.
| Timeframe | Action | Details |
|---|---|---|
| 6+ Weeks Before | Book a travel medicine consultation | Arrange an appointment with UCLA, Stanford, Passport Health, or another California travel clinic. Review CDC destination guidance and visa or vaccination rules. |
| At Your Visit | Bring all vaccine records | Review routine immunizations, destination-specific vaccines, malaria prevention, altitude advice, and travel-related prescriptions. |
| Follow-Up Visits | Complete multi-dose series | Rabies pre-exposure, Japanese encephalitis, hepatitis A/B catch-up, and some other regimens may need spacing between doses. |
| 1–2 Weeks Before | Confirm documents and medications | Check that your yellow fever certificate is complete if required, and pack prescriptions, insect repellent, sunscreen, oral rehydration salts, and regular medicines in carry-on luggage. |
| On Return | Monitor symptoms | Fever, rash, diarrhea, jaundice, or unexplained illness after international travel should trigger medical review, especially if you visited tropical or malaria-risk regions. |
Ready to Travel from California?
Start your travel health preparation early. California’s travel clinics and academic centers can help protect you wherever your itinerary takes you.
This article is for informational purposes only. Always consult a licensed healthcare provider for personalized travel-health advice. Information should be rechecked before travel because recommendations and entry rules can change.