Washington State: Your Gateway to International Travel Health
A complete guide for Washington-based travelers preparing for international trips — vaccines, regulations, clinics, and expert resources across the Evergreen State, from Seattle's Pacific Rim gateway to the Eastern Cascades and the Columbia River corridor.
Washington State & International Travel Health
Washington — the Evergreen State — occupies one of the most strategically connected positions in American international life. Anchored by Seattle-Tacoma International Airport (Sea-Tac / SEA) — the primary Pacific Rim gateway on the US West Coast for transoceanic travel to East Asia, Southeast Asia, Australia, and beyond — Washington is home to some of the world's most internationally active companies: Boeing, whose aircraft and engineering workforce maintains a global footprint; Amazon and Microsoft, whose technology employees travel to every corner of the world; and Starbucks, whose global supply chain teams traverse coffee-growing regions from Ethiopia to Indonesia. Washington's Port of Seattle and Port of Tacoma form one of the largest container shipping complexes in North America, with deep maritime ties across the Pacific.
Washington is also home to one of the most culturally diverse state populations in the nation. Large and vibrant Chinese-American, Filipino-American, Vietnamese-American, Korean-American, South Asian, and Japanese-American communities — particularly in the Seattle, Tacoma, and Bellevue metro areas — maintain strong family and cultural ties to Asia, creating year-round high-volume travel to East and Southeast Asia. Medically, Washington is anchored by UW Medicine — home of the University of Washington School of Medicine, ranked among the top three medical schools in the nation and a global leader in infectious disease research — along with Virginia Mason Medical Center, Swedish Health Services, and MultiCare Health System in the greater Seattle-Tacoma area. Providence Sacred Heart Medical Center anchors Spokane and Eastern Washington. Whether you are departing from Sea-Tac (SEA), Spokane International (GEG), Bellingham International (BLI), or Paine Field (PAE), your travel health preparation begins here in Washington State.
Healthcare in Washington for Travelers
Washington's travel health infrastructure is led by UW Medicine — encompassing Harborview Medical Center (the Pacific Northwest's flagship Level I Trauma Center), UW Medical Center, and Hall Health Center — all affiliated with the University of Washington School of Medicine, ranked among the nation's top three. Virginia Mason Medical Center in Seattle maintains a highly regarded travel medicine clinic known for serving Seattle's global business community. MultiCare Health System in Tacoma serves South Sound and the large military community at Joint Base Lewis-McChord (JBLM). Private travel clinic networks — led by Passport Health — serve Seattle, Tacoma, and Spokane. The Washington State Department of Health (DOH) maintains the Washington Immunization Information System (WAIIS) registry and coordinates immunization policy through local health jurisdictions across the state's 39 counties.
State Health Authority
The Washington State Department of Health (DOH) Immunization Program oversees vaccine policy, maintains the Washington Immunization Information System (WAIIS), and certifies Yellow Fever Vaccination Centers statewide. School immunization requirements are governed by RCW 28A.210.080 and WAC 246-105-030. WA DOH's Immunization Section works with local health jurisdictions across all 39 counties.
Academic Medical Centers
UW Medicine — anchored by Harborview Medical Center and UW Medical Center, affiliated with the #3-ranked UW School of Medicine — provides Washington's most comprehensive infectious disease and travel medicine programs. Harborview is the Pacific Northwest's only Level I Trauma Center and is internationally recognized for its infectious disease and tropical medicine research and clinical expertise.
Private Travel Clinics
Passport Health operates CDC-certified Yellow Fever vaccination clinics in Seattle and Spokane. Virginia Mason Travel Medicine — one of Seattle's most respected multi-specialty medical groups — provides destination-specific pre-travel consultations and the full travel vaccine menu for Seattle's global business and tech-sector traveler community. DOH local health jurisdictions supplement statewide access.
Vaccine Regulations in Washington State
Washington's school immunization requirements are governed by RCW 28A.210.080 and WAC 246-105-030. Here is what travelers — and parents of young travelers — need to understand about the Evergreen State's vaccine framework, including its notably strict MMR exemption policy.
School Entry Requirements
Under RCW 28A.210.080, children attending any public or private school must present proof of required immunizations or a valid exemption. Required vaccines include DTaP/Tdap, Polio, MMR, Varicella, Hepatitis B, Hepatitis A, and MenACWY for 6th grade entry. The WAIIS registry is used to track and verify records statewide. WA DOH publishes updated school immunization requirements annually through local health jurisdictions.
MMR Exemption Eliminated — Strict Policy
Washington passed SB 5840 (2019), eliminating personal and philosophical exemptions for the MMR vaccine specifically. This made Washington one of the first states to move in this direction following measles outbreaks in the Clark County / Vancouver area. For MMR, only medical exemptions — signed by a licensed provider — are accepted. For all other required vaccines, medical and personal/philosophical exemptions remain available, requiring a healthcare provider's signature and submission to the school.
International Entry Requirements
Washington does not impose vaccine mandates for residents traveling internationally beyond school and childcare settings. However, destination countries enforce independent legally binding entry conditions. Yellow fever certification is required for many sub-Saharan African and South American destinations. Washington's enormous Asia-Pacific travel volume creates unique travel health considerations — including Hepatitis B, Japanese Encephalitis, and malaria — for residents of the state's large East and Southeast Asian communities returning to visit family internationally.
Routine Vaccines for Children in Washington State
Washington's childhood immunization schedule follows the CDC/ACIP recommended schedule. The WA DOH Immunization Section partners with pediatric providers statewide — anchored by Seattle Children's Hospital (one of the nation's top-ranked children's hospitals, UW-affiliated), Mary Bridge Children's Hospital in Tacoma (MultiCare), and Sacred Heart Children's Hospital in Spokane — to promote on-schedule vaccination across Washington's geographically diverse communities, from the coastal rainforests of the Olympic Peninsula to the arid highlands of Eastern Washington.
| Vaccine | Disease(s) Prevented | Typical Schedule | Notes for Travelers |
|---|---|---|---|
| DTaP / Tdap | Diphtheria, Tetanus, Pertussis | 5 doses by age 6; Tdap booster at 11–12 | Pertussis outbreaks are common globally including Asia — confirm current status before any international trip |
| Polio (IPV) | Poliomyelitis | 4 doses by age 4–6 | Some countries require proof of polio vaccination for exit — particularly Africa and South/Southeast Asia |
| MMR | Measles, Mumps, Rubella | 2 doses: 12–15 months & 4–6 years | Measles is endemic in Asia and many WA travel destinations; WA eliminated philosophical exemptions for MMR in 2019 — confirm 2 doses for all children before any international trip |
| Varicella | Chickenpox | 2 doses: 12–15 months & 4–6 years | Required for WA school entry; immunity critical during international travel — especially Asia and Pacific destinations |
| Hepatitis B | Hepatitis B virus | 3-dose series: birth, 1–2 months, 6–18 months | Critically important for WA's large Asian-American community traveling to China, Philippines, Vietnam, Korea, and Southeast Asia with very high HBV prevalence |
| Hepatitis A | Hepatitis A virus | 2 doses starting at 12–23 months | Required for WA 6th grade entry; high priority for all developing-country destinations including Southeast Asia |
| Hib | Haemophilus influenzae type b | 3–4 doses by 15 months | Standard childhood protection; confirm up to date before international travel |
| PCV (Pneumococcal) | Pneumococcal disease, pneumonia | 4 doses by 15 months | Protects against serious pneumonia complications globally — important for all international travel |
| Rotavirus | Severe diarrheal disease | 2–3 doses by 8 months | Relevant for travel to developing countries across Asia, Africa, and Latin America |
| MenACWY (Meningococcal) | Meningococcal disease A, C, W, Y | 11–12 years; booster at 16 — required at 6th grade in WA | Required for sub-Saharan Africa travel and Saudi Arabia (Hajj/Umrah pilgrimage) |
| HPV | Human Papillomavirus / cervical cancer | 2–3 doses starting at age 11–12 | Maintain on-schedule vaccination regardless of travel disruptions; recommended through age 26 |
| Influenza | Seasonal influenza | Annually from 6 months of age | Asia influenza strains often differ from US strains — annual vaccination is especially important for Washington's high-volume Asia travelers |
| COVID-19 | COVID-19 | From 6 months; updated annually | 2024–2025 updated vaccine recommended by CDC; confirm any destination entry documentation requirements before Sea-Tac departure |
Routine Vaccines for Adults in Washington State
📍 Washington State Travel Health Centers & Major Hospitals
Click any marker to view details and get Google Maps directions. Orange = Travel Health Clinic | Blue = Major Hospital
Adult vaccine protection from childhood series can fade significantly over time, and adults face unique health risks based on their specific travel destinations and activities. The WA DOH and CDC recommend all Washington adults review and update the following vaccines — particularly before any international trip from Sea-Tac, Spokane, Bellingham, or Paine Field.
Td / Tdap Booster
Every adult should receive a Td booster every 10 years. Adults who never received Tdap should substitute one Td dose with Tdap. For Washington's large tech-sector workforce traveling regularly across Asia and Southeast Asia — where tetanus wound exposure can occur even in urban settings — maintaining an updated Tdap status is a basic travel health baseline.
Every 10 yearsInfluenza (Annual)
Annual flu vaccination is recommended for all Washington adults. The updated 2024–2025 vaccine is available at pharmacies, DOH local health jurisdictions, and hospital systems statewide. Asia influenza strains — particularly relevant for Washington's enormous China, Japan, Korea, and Southeast Asia travel volume via Sea-Tac — can differ from the North American seasonal strain. Annual vaccination is especially important for frequent Pacific Rim travelers.
AnnualCOVID-19 (Updated)
The 2024–2025 updated COVID-19 vaccine is recommended for all Washington adults. Available at pharmacies, DOH local health jurisdictions, and hospital systems statewide. Some international destinations still require documentation of vaccination status for entry or transit — confirm your destination's current policy before your Sea-Tac departure, particularly for East Asian destinations with varying ongoing entry protocols.
Updated annuallyHepatitis A & B
Adults not vaccinated in childhood should complete both series before international travel. Hepatitis B is the highest-priority travel vaccine for Washington's large Chinese-American, Filipino-American, Vietnamese-American, and Korean-American communities traveling to visit family — East and Southeast Asia have among the world's highest HBV prevalence. Hepatitis A is essential for travel to virtually all developing-country destinations.
Catch-up seriesMeningococcal
MenACWY is required for Hajj/Umrah pilgrimage to Saudi Arabia and strongly recommended for sub-Saharan Africa travel. Washington's growing Muslim community — with active Hajj pilgrimage travel from Sea-Tac — makes meningococcal vaccine awareness a priority. MenB is recommended for college students and adults at increased risk. Both vaccines are available at UW Medicine, Virginia Mason, and Passport Health Washington locations.
Risk-basedPneumococcal & Shingles
Adults 50 and older should receive Shingrix (shingles vaccine) as a 2-dose series. PCV15 or PCV20 is recommended for adults 65+ and younger adults with specific health conditions. Washington's active retiree population — particularly in communities like Sequim, Bellingham, Spokane, and the Eastside suburbs — should ensure both vaccines are current before long-haul international travel to Asia, Africa, or Latin America.
Age 50+The Three Categories of Travel Vaccines
Travel vaccines fall into three distinct categories. Understanding each is essential for any Washington traveler preparing for an international trip. Your travel health provider — whether at UW Medicine, Virginia Mason, MultiCare, Providence Sacred Heart, PeaceHealth, or Passport Health — will assess all three during your pre-travel consultation.
| Travel Vaccine | Category | Key Destinations | Notes |
|---|---|---|---|
| Yellow Fever | Required | Sub-Saharan Africa, tropical South America | UW Medicine (Hall Health, Harborview), Virginia Mason, and all Passport Health WA locations are CDC-certified YF centers |
| Typhoid | Recommended | South Asia, Southeast Asia, Africa, Latin America | Oral or injectable; high priority for Washington's substantial South Asian and Southeast Asian travel communities — widely available statewide |
| Japanese Encephalitis | Recommended | Rural Asia, Southeast Asia | 2-dose series; UW Medicine and Virginia Mason are Washington's primary resources — particularly relevant for Washington's enormous rural Asia and Southeast Asia traveler population |
| Rabies (pre-exposure) | Recommended | Asia, Africa, Latin America (remote areas) | 3-dose series; advisable for Washington researchers, adventure travelers, and aid workers in remote international settings |
| Cholera (Vaxchora) | Recommended | Sub-Saharan Africa, South/Southeast Asia, Haiti | Single oral dose for adults; confirm availability with UW Medicine Hall Health, Virginia Mason, or Harborview Infectious Disease |
| Meningococcal ACWY | Required / Recommended | Meningitis Belt (Africa), Saudi Arabia (Hajj/Umrah) | Required for Hajj — available at all major Washington travel health programs; widely available in the greater Seattle area |
| Hepatitis B | Highly Recommended | East Asia, Southeast Asia, sub-Saharan Africa, Eastern Europe | The single most critical catch-up vaccine for Washington's large Asian-American community traveling to China, Philippines, Vietnam, Korea — some of the world's highest-prevalence HBV regions |
| Malaria Prophylaxis | Prescription Rx | Sub-Saharan Africa, South/Southeast Asia, Central America | Not a vaccine — prescription medication available from UW Medicine (Harborview, Hall Health), Virginia Mason, Passport Health Seattle, and MultiCare Tacoma |
Main Travel Health & Vaccine Centers in Washington State
Washington's travel health resources span UW Medicine's world-class infectious disease programs in Seattle, Virginia Mason's respected private travel medicine clinic, MultiCare in the South Sound, Providence Sacred Heart in Eastern Washington, and PeaceHealth in Bellingham and Vancouver — covering the Evergreen State's diverse geography from Puget Sound to the Cascade passes and the Columbia Plateau.
Seattle / Greater Puget Sound Metro
Hall Health: 4060 E Stevens Way NE, Seattle, WA 98195 | Harborview: 325 9th Ave, Seattle, WA 98104
Hall Health: (206) 685-1011 | Harborview: (206) 744-3000
UW Medicine — affiliated with the University of Washington School of Medicine, ranked #1 or #2 in the nation for primary care and among the top three overall — operates Washington's most academically rigorous and experience-deep travel medicine programs. Hall Health Center on the UW campus provides travel vaccines, yellow fever certification, malaria prophylaxis, and individualized pre-travel consultations — serving the University of Washington's enormous global research and study-abroad community, including faculty conducting fieldwork across sub-Saharan Africa, South Asia, and Southeast Asia. Harborview Medical Center — the Pacific Northwest's only Level I Trauma Center — provides the region's most capable infectious disease and post-travel illness evaluation, backed by UW's internationally recognized tropical medicine and global health research faculty. For Washington residents undertaking the most complex international itineraries, or travelers who have returned unwell from remote or tropical destinations, UW Medicine and Harborview are the definitive state resources.
1100 9th Ave, Seattle, WA 98101
(206) 223-6600
Virginia Mason Medical Center — one of Seattle's most highly regarded multi-specialty medical groups, known for quality and patient experience — maintains a respected travel medicine program deeply familiar with Seattle's Asia-Pacific travel health landscape. Virginia Mason's travel medicine specialists provide full pre-travel consultations, yellow fever certification, all major travel vaccines, malaria prophylaxis, and post-travel illness evaluation. The clinic is a preferred resource for Seattle's global technology, aviation, and maritime business communities — including Amazon, Microsoft, Boeing, and international shipping executives — for whom efficient, expert travel health preparation before Sea-Tac departures is a professional necessity.
1200 5th Ave, Suite 300, Seattle, WA 98101 | (206) 624-7428
CDC-designated Yellow Fever vaccination center in downtown Seattle — conveniently accessible from throughout the Seattle metro area before Sea-Tac departures. Full travel vaccine inventory with destination-specific consultations for all traveler types, including leisure travelers, business executives, missionaries, study abroad students, and Seattle's large diaspora communities traveling back to Asia, Africa, and Latin America.
Tacoma / South Sound / Joint Base Lewis-McChord
1901 S Union Ave, Tacoma, WA 98405
(253) 403-1000 | By appointment
MultiCare Health System — South Puget Sound's largest health system — provides travel health and immunization services for Tacoma, Pierce County, and the surrounding South Sound communities. Joint Base Lewis-McChord (JBLM) — one of the largest Army and Air Force installations in the United States, located just south of Tacoma — creates significant travel medicine demand among the tens of thousands of active-duty soldiers, airmen, and their families who rotate through overseas deployments and personal international travel. MultiCare is the primary civilian travel health resource for JBLM-adjacent communities. Madigan Army Medical Center at JBLM provides military-specific travel health services for active-duty personnel and eligible beneficiaries.
Spokane & Eastern Washington / Inland Northwest
101 W 8th Ave, Spokane, WA 99204
(509) 474-3131 | 24/7 Emergency
Providence Sacred Heart Medical Center — Eastern Washington's flagship hospital and a Level II Trauma Center — is the Inland Northwest's primary academic hospital, serving Spokane and the vast agricultural and rural communities of Eastern Washington, Northern Idaho, and the eastern Cascades. Travel immunization and infectious disease services are available through Providence Sacred Heart's clinical programs. Eastern Washington's significant agricultural and faith-based communities include many missionary teams and families traveling to Latin America, Africa, and Asia. Contact directly to confirm available travel vaccines and scheduling. Complex travel medicine consultations can be supplemented by Spokane's Passport Health clinic.
818 W Riverside Ave, Suite 500, Spokane, WA 99201 | (509) 747-7428
CDC-designated Yellow Fever vaccination center serving Spokane, Eastern Washington, and the Inland Northwest. Full travel vaccine inventory for Eastern Washington travelers departing from Spokane International Airport (GEG) or routing through Sea-Tac for international departures. Serves Washington State University travelers, Eastern Washington University community, and the broader Inland Northwest region.
Bellingham & Northwest Washington
2075 Barkley Blvd, Bellingham, WA 98226
(360) 734-5400 | By appointment
PeaceHealth St. Joseph Medical Center — Northwest Washington's primary hospital — provides travel immunization services for Bellingham, Whatcom County, and the surrounding communities near the US–Canada border. Bellingham is home to Western Washington University, whose student and faculty population includes significant international travel for study abroad, research, and field studies. Travelers departing from Bellingham International Airport (BLI) — including those crossing into British Columbia for connections — should contact PeaceHealth directly to confirm available travel vaccines and scheduling.
Vancouver & Southwest Washington
400 NE Mother Joseph Pl, Vancouver, WA 98664
(360) 256-2000 | By appointment
PeaceHealth Southwest Medical Center — Southwest Washington's flagship Level II Trauma Center — serves Vancouver, Clark County, and the communities along the Columbia River corridor. Travel immunization and infectious disease services are available through PeaceHealth Southwest's clinical programs for Clark County residents. Vancouver, WA sits immediately across the Columbia River from Portland, Oregon, giving Southwest Washington residents ready access to Portland International Airport (PDX) and Oregon Health & Science University (OHSU) travel medicine resources for complex consultations, in addition to PeaceHealth Southwest's local travel health capabilities.
Pre-Travel Health Checklist for Washington State Travelers
Follow this step-by-step timeline to ensure you are fully protected before departing from Washington State on an international trip — whether from Sea-Tac, Spokane, Bellingham, or Paine Field.
| Timeframe | Action | Details |
|---|---|---|
| 6+ Weeks Before | Book a travel health consultation | Contact UW Medicine Hall Health or Harborview (Seattle), Virginia Mason (Seattle), Passport Health (Seattle or Spokane), MultiCare (Tacoma), PeaceHealth (Bellingham or Vancouver), or Providence Sacred Heart (Spokane). Research destination requirements at CDC Travelers' Health. For complex itineraries involving rural Asia or multiple high-risk countries, UW Medicine's travel and tropical medicine expertise is unmatched in the Pacific Northwest. |
| At Your Visit | Bring your vaccination records | Receive required and recommended vaccines for your destination. Get prescriptions for malaria prophylaxis if needed. Request your ICVP Yellow Card if yellow fever vaccination is legally required for your destination country. Ask your provider to review your WAIIS records to identify any gaps in your routine adult vaccination history — particularly Hepatitis B for Asia travelers. |
| Follow-Up Visits | Complete multi-dose series | Rabies pre-exposure (3 doses over 21 days), Japanese Encephalitis (2 doses), Hepatitis A catch-up (2 doses), and Hepatitis B catch-up (3 doses) all require multiple appointments spaced weeks apart. UW Medicine Hall Health and Virginia Mason can plan expedited schedules for travelers with firm departure dates — discuss your timeline at your first appointment. |
| 1–2 Weeks Before | Confirm all travel health documents | Verify your ICVP (Yellow Card) is correctly stamped, signed, and dated. Pack a travel health kit: oral rehydration salts, antidiarrheal medication, DEET insect repellent (30%+), sunscreen, and all prescription medications including malaria prophylaxis. Confirm sufficient supply for your full travel period including any layovers or transit countries. |
| On Return | Monitor for illness symptoms | If you develop fever, rash, persistent diarrhea, jaundice, or unusual symptoms within weeks of returning to Washington, contact Harborview Medical Center Infectious Disease or UW Medical Center immediately — these are the Pacific Northwest's most capable resources for diagnosing travel-acquired tropical diseases. Always provide your complete travel history — every country, date, and potential exposure — to every healthcare provider you contact. |
Ready to Travel from Washington State?
From Sea-Tac's Pacific Rim gateway to Spokane's Inland Northwest hub — Washington's travel health providers, led by UW Medicine and backed by Virginia Mason and Providence Sacred Heart, are ready to protect you for wherever in the world your journey takes you.
This article is for informational purposes only. Always consult a licensed healthcare provider for personalized travel health advice. Information current as of 2025–2026.