Complete Guide to Vaccinations Before Traveling to Singapore: Essential & Recommended Vaccines and Immunization Schedules
Singapore is a tropical nation located near the equator, characterized by a hot and humid climate year-round. As travel duration lengthens and the scope of activities expands, the importance of preventive vaccinations increases. This article, written from a pharmacist's perspective and based on the latest information, explains the vaccinations that travelers to Singapore should consider before departure.
Required Vaccinations for Entry to Singapore
Legally Mandated Vaccinations
There are currently no vaccinations legally required for entry to Singapore (as of 2026). However, travelers arriving from yellow fever–endemic countries may be required to present a yellow fever vaccination certificate.
Pharmacist's note
Although yellow fever vaccination was once recommended for Singapore travel, Singapore itself is not an endemic area for yellow fever. Currently, requirements typically apply only to travelers arriving via Africa or Latin America. For the latest information, check the Embassy of Japan in Singapore.
Strongly Recommended Vaccinations (for Travelers)
The following table summarizes vaccines strongly recommended before traveling to Singapore.
| Vaccine | Target Travelers | Number of Doses | Interval Between Doses | Duration of Immunity |
|---|---|---|---|---|
| Hepatitis A | All travelers | 2 doses | 6–12 months | 20+ years |
| Hepatitis B | All travelers | 3 doses | 0, 1, 6 months | Lifetime immunity |
| Typhoid | Long-term visitors; those planning high-risk food exposure | 1 dose | — | 3 years |
| Japanese Encephalitis | Those planning to visit rural/suburban areas | 2–3 doses | Based on epidemiology | Several years to 10 years |
| MMR (Measles, Mumps, Rubella) | Those born in 1966 or later with unclear vaccination history | 2 doses | 28 days or more | Lifetime immunity |
| Varicella (Chickenpox) | Those with no prior infection or unclear vaccination history | 2 doses | 4–8 weeks | Lifetime immunity |
Hepatitis A Vaccine
One of the most important vaccinations. Although Singapore generally maintains good sanitation, cases of infection among travelers have been reported.
Vaccines Used
- Havrix® (GlaxoSmithKline): Inactivated vaccine; second dose given 6 months after the first
- Avaxim® (Sanofi/MSD): Inactivated vaccine; similar schedule
Vaccination Schedule Example
- Travel planned 2+ months away: Standard 6-month interval between doses
- Travel planned within 2 months: Accelerated schedule available (consult your physician)
Cost Estimate
- Per dose: ¥6,000–¥8,000
- Two-dose series: ¥12,000–¥16,000
Pharmacist's note
Hepatitis A vaccine is inactivated, so it is safe for pregnant women, though new vaccination during pregnancy is typically delayed until after delivery. Vaccination during breastfeeding poses no problem.
Hepatitis B Vaccine
Singapore is a region with moderate Hepatitis B carrier prevalence. Vaccination is recommended considering the possibility of healthcare facility visits or dental procedures.
Vaccines Used
- Engerix-B® (MSD): Recombinant Hepatitis B vaccine
- HBvaxPRO® (MSD): Recombinant Hepatitis B vaccine
- Twinrix®: Combined Hepatitis A and B vaccine (more efficient)
Standard Vaccination Schedule
- One dose each at months 0, 1, and 6
- Accelerated schedule (days 0, 7, 21 + one booster at 1 year) is also an option
Cost Estimate
- Per dose: ¥4,000–¥6,000
- Three-dose series: ¥12,000–¥18,000
Typhoid Vaccine
Strongly recommended for long-term visitors and those planning frequent street food consumption. While the incidence rate across Singapore is low, consider vaccination if you are combining travel to Singapore with visits elsewhere in Southeast Asia.
Vaccines Used
- Typherix® (Sanofi): Encapsulated polysaccharide vaccine (intramuscular)
- Typhim Vi® (Sanofi): Same type
Vaccination Schedule
- Single dose provides 3 years of protection
- Booster vaccination every 3 years
Cost Estimate
- Per dose: ¥3,000–¥5,000
- Booster every 3 years: Same as above
Pharmacist's note
Typhoid vaccines come in two types: oral live vaccine (Ty21a) and intramuscular inactivated polysaccharide vaccine (Vi). In Japan, the intramuscular form is standard. The oral form is available only at certain facilities and must not be taken simultaneously with antibiotics.
Japanese Encephalitis Vaccine
The risk of infection in Singapore's urban areas is extremely low; however, vaccination is recommended for those planning extended stays in suburban areas, mangrove zones, or rural regions.
Vaccines Used
- Jespect® (Chiba Serum): Inactivated; cell-culture derived
- JESPRIT® (GlaxoSmithKline): Inactivated; cell-culture derived
Vaccination Schedule
- Initial series: Two doses on days 0 and 7, followed by a booster at 1 year
- Subsequent boosters: Every 5 years thereafter
Cost Estimate
- Per dose: ¥4,500–¥6,500
- Initial series (3 doses): ¥13,500–¥19,500
MMR (Measles, Mumps, Rubella) Vaccine
For those born in 1966 or later with unclear documentation of two routine vaccinations, confirmation and supplementary vaccination before travel is necessary.
How to Confirm Vaccination History
- Mother and Child Health Handbook (most reliable)
- Vaccination records or immunization certificates
- If unclear: Supplementary vaccination at physician's discretion
Cost Estimate
- Per dose: ¥9,000–¥12,000
Pharmacist's note
MMR is a live vaccine and is contraindicated during pregnancy. Those who are pregnant or planning pregnancy with unclear vaccination history should complete vaccination before conception. Vaccination should be avoided within 4 weeks of the expected delivery date.
Varicella (Chickenpox) Vaccine
Singapore is an endemic area for human herpesvirus 4 (varicella-zoster virus). Those without prior infection or unclear vaccination history should consider vaccination.
Vaccination Schedule
- Two-dose series (4–8 weeks apart) is standard
- For adults with prior infection, vaccination is unnecessary
Cost Estimate
- Per dose: ¥6,000–¥8,000
Situation-Specific Vaccination Schedule Examples
Pattern 1: Short Business Trip (About 1 Week, Urban Areas Only)
| Timing | Vaccine | Number of Doses | Notes |
|---|---|---|---|
| 2 months before travel | Hepatitis A | 1st dose | First-time vaccinees only |
| 1 month before travel | Hepatitis A | 2nd dose (accelerated schedule) | — |
| 4+ weeks before departure | MMR, Varicella | Supplementary doses | Only if vaccination history unclear |
Estimated cost: ¥15,000–¥25,000
Pattern 2: Medium-Term Stay (1–3 Months, Including Suburban Activities)
| Timing | Vaccine | Number of Doses | Notes |
|---|---|---|---|
| 3–4 months before travel | Hepatitis A | 1st dose | — |
| 2–3 months before travel | Hepatitis B | 1st dose | — |
| 2 months before travel | Hepatitis A | 2nd dose | — |
| 1–2 months before travel | Hepatitis B | 2nd dose | — |
| 4+ weeks before travel | Typhoid, Japanese Encephalitis | Initial series | As needed |
| 4+ weeks before departure | MMR, Varicella | Supplementary doses | If vaccination history unclear |
Estimated cost: ¥35,000–¥55,000
Pattern 3: Long-Term Stay (6+ Months, Planned Settlement)
| Timing | Vaccine | Number of Doses | Notes |
|---|---|---|---|
| 6 months before | Hepatitis A | 1st dose | — |
| 5 months before | Hepatitis B | 1st dose | — |
| 4 months before | Hepatitis A / Typhoid | 2nd dose / Single dose | — |
| 3 months before | Hepatitis B / Japanese Encephalitis | 2nd dose / Initial series (2 doses) | — |
| 2 months before | Japanese Encephalitis / Hepatitis B | 2nd dose / 3rd dose | Booster at 1-year mark |
| 4+ weeks before departure | MMR, Varicella, other boosters | — | Verify vaccination history |
Estimated cost: ¥50,000–¥80,000
Pharmacist's note
The third dose of Hepatitis B is typically given 6 months after the first, but depending on travel schedule, you may complete the first two doses before departure and receive the third dose locally or after returning home. Consult with your physician.
Important Vaccination Considerations
Vaccination Interval Rules
Guidelines for spacing between live vaccines (MMR, varicella) and inactivated vaccines (Hepatitis A, Hepatitis B, etc.):
- Live vaccine → Live vaccine: 27 days or more between doses
- Live vaccine → Inactivated vaccine: May be given the same day
- Inactivated vaccine → Inactivated vaccine: May be given the same day
- Inactivated vaccine → Live vaccine: No restriction
Vaccination During Pregnancy and Breastfeeding
| Vaccine Type | During Pregnancy | During Breastfeeding |
|---|---|---|
| Live vaccines (MMR, Varicella) | ❌ Contraindicated | ✅ Safe |
| Inactivated vaccines (Hepatitis A, B, Typhoid, Japanese Encephalitis) | ⚠️ Consult physician* | ✅ Safe |
*Vaccination during early pregnancy (especially the first trimester) is generally avoided. Vaccination within 4 weeks of the expected delivery date should be deferred. Discuss benefits and risks with your physician.
Those with Allergy History
- Egg allergy: Japanese encephalitis vaccine is cultured in eggs; use with caution, though it is typically safe. Inform your physician beforehand.
- Gelatin allergy: MMR vaccine contains gelatin. Physician judgment is needed.
- Antibiotic allergy: Most vaccines contain trace amounts of antibiotics. Consult your physician if you have a history of severe allergic reactions.
Tips for Obtaining Vaccinations
Using Travel Clinics
Recommended facilities
- National Institute of Infectious Diseases
- Designated travel medicine clinics at major medical centers
- Airport health clinics (for last-minute vaccinations)
When selecting a clinic, confirm that they:
- Have up-to-date vaccine inventory
- Can provide documentation of vaccination in English (for travel records)
- Have availability within your timeline
- Accept your insurance or offer reasonable pricing