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US Virgin Islands
Risk:
Low
Health Overview
The US Virgin Islands — St. Thomas; St. John (two-thirds National Park); and St. Croix — is a US territory where 911 and US insurance work. Dengue is the active health issue: CDC Health Advisory HAN 00523 is in effect and the territory's Department of Health has declared an outbreak in the St. Croix district. Devastated by back-to-back Category 5 hurricanes in 2017; largely rebuilt. DEET and trip cancellation insurance are the two most important preparations.
Key Health Risks
High
Dengue — Active CDC Health Advisory HAN 00523 and Declared St. Croix Outbreak
CDC Health Advisory HAN 00523, 'Ongoing Risk of Dengue Virus Infections and Updated Testing Recommendations', is in effect and supersedes the earlier HAN 00511. Separately, the US Virgin Islands Department of Health has declared a dengue outbreak in the St. Croix district — so risk is not uniform across the territory and St. Croix currently carries the highest exposure. Aedes aegypti is present on all three islands year-round and bites during daylight hours, which means repellent has to be a daytime habit rather than an evening one. St. John's outdoor and hiking activities create sustained mosquito exposure.
High
Hurricane Vulnerability — Post-Irma/Maria Legacy
Two Category 5 hurricanes within two weeks in September 2017. St. John lost over 90% of structures. Territory largely rebuilt but remains highly hurricane-exposed.
Moderate
Limited Healthcare on St. John
St. John's Myrah Keating Smith Health Center provides 24-hour emergency services but is NOT a full hospital. Serious emergencies require boat or helicopter transfer to St. Thomas (approximately 45 minutes).
Health Risk Callout
Two points specific to USVI. First, dengue: CDC HAN 00523 is in effect territory-wide and the Department of Health has declared an outbreak in the St. Croix district specifically — a St. Croix itinerary carries more exposure than St. Thomas or St. John right now. Second, the St. John healthcare limitation: the Myrah Keating Smith Health Center provides 24-hour emergency service but is not a full hospital, so a serious event means a boat or helicopter transfer to St. Thomas of roughly 45 minutes.
Other Health Risks
Leptospirosis; Hurricane-related illness
Regional Information
Regional Risk Callout
St. Thomas: most developed; Roy Lester Schneider Hospital. St. John: extraordinary but limited medical care (Myrah Keating Smith Health Center — NOT a full hospital; serious emergencies require boat/helicopter to St. Thomas). St. Croix: Juan F. Luis Hospital; authentic Caribbean character.
Regional Healthcare Callout
US-standard healthcare. Roy Lester Schneider (St. Thomas) and Juan F. Luis (St. Croix). St. John: health center only; serious cases transfer to St. Thomas. Complex cases may transfer to Puerto Rico.
Vaccine and Malaria Prevention
💉 Entry Vaccine Required
None — US territory. REAL ID or passport required for domestic flights as of May 7 2025.
🛡️ Recommended Vaccines
Routine vaccines; Hepatitis A; Hepatitis B; Typhoid for extended stays
🦟 Malaria Information
No malaria risk.
None
Physician Note
Dr. Robert
Emergency Medicine · 25+ Years · 40+ Countries
The US Virgin Islands is covered by CDC Health Advisory HAN 00523 for dengue, and the territory's own Department of Health has declared an outbreak in the St. Croix district — so the risk is not evenly spread, and a St. Croix trip warrants more emphasis on daytime repellent than the other two islands. Aedes aegypti bites by day.
Driving on the left surprises US visitors, since almost nothing else about the territory does. And the St. John healthcare limitation is the point worth making concrete: a serious event there means a 45-minute boat transfer to St. Thomas, not a short ambulance ride.
Pre-Departure Checklist
8+ Weeks
- Be sure to consult your Dr. prior to travel to discuss
- CDC recommends Routine vaccines
- Hep A/B
- REAL ID
- Trip cancellation insurance.
2-4 Weeks
- DEET 30%+
- STEP registration
- Confirm St. John water source.
Day Of
- 911
- Drive on LEFT
- DEET
- Carry water for St. John hiking.
Trip Type Guidance
Adventure
- St. John National Park hiking
- Buck Island St. Croix
- Scuba diving the Wall.
Family
- No passport
- 911
- US insurance
- Trunk Bay.
Beach
- Trunk Bay
- Cinnamon Bay
- Sapphire Beach.
Business
- Charlotte Amalie commerce and cruise hub
Notes
Special Evacuation Notes
US health insurance including Medicare and Medicaid applies. St. John emergencies require boat/helicopter to St. Thomas. Air transport to Puerto Rico for complex cases.
Safety Notes
Safe US territory. Key: DEET for dengue; drive on the LEFT in USVI (surprises US visitors); hurricane insurance June-November; St. John limited medical care.
partner recommendation
Medical Evacuation & Assistance
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Good For
Adventure
Family
Beach
Business