​Last updated on 20 June 2025

  • Updated to align with MOH Circular 26/2025 “Seasonal Influenza Vaccination for the 2025 Southern Hemisphere Influenza Season”




The National Adult Immunisation Schedule (NAIS)1 provides guidance on vaccinations that persons aged 18 years or older should adopt to protect themselves against vaccine-preventable diseases.

​This Care Protocol also includes guidance on COVID-19 vaccination for high-risk groups, for protection against severe disease.


Certain adults are at increased risk of complications or susceptible to vaccine preventable diseases if they have not previously received the vaccination and are in contact with individuals who have the infection. Vaccinations recommended under the NAIS aim to prevent such infections among susceptible individuals and reduce complications, morbidity, and mortality.2

The NAIS was developed based on international best practices and the recommendations of the Expert Committee on Immunisation (ECI). Considerations include:

  • Local disease burden;

  • Age, pre-existing medical conditions, vaccination history;

  • Vaccine safety, efficacy and cost effectiveness of the vaccines in preventing infections among susceptible individuals and reducing complications, morbidity and mortality.

The NAIS is summarised in Table 1 below.1

Table 1: National Adult Immunisation Schedule

Vaccine

18-26 years

27-64 years

≥ 65 years

Influenza (INF)

1 dose annually or per season

1 dose annually or per season

Pneumococcal conjugate (PCV13)

1

dose

Pneumococcal polysaccharide (PPSV23)

1 or 2 doses
(depending on indication)

1 dose

Tetanus, reduced diphtheria and acellular pertussis (Tdap)

1 dose during each pregnancy

Human papillomavirus (HPV2 or HPV4)

3 doses
(Females)


Hepatitis B (HepB)

3 doses

Measles, mumps and rubella (MMR) (live)

2 doses

Varicella (VAR) (live)

2 doses



Recommended for adults who meet age requirement

Recommended for adults with specific medical condition or indication

Recommended for adults who have not been previously vaccinated, or lack evidence of past infection or immunity

COVID-19 Vaccinations

The 2024/2025 COVID-19 vaccination recommendations for both initial and additional doses are targeted at individuals at increased risk of severe COVID-19. The summarised recommendations are shown in Table 2.


Table 2: Summary of 2024/25 COVID-19 Vaccine Recommendations

Vaccination recommendation

Number of doses

Interval between doses

(a) Initial doses (for unvaccinated persons)

i. Recommended for higher-risk groups:

  • Individuals aged 60 years and above
  • Medically vulnerable individuals aged 6 months and above
  • Residents of aged care facilities

Age 6 months – 4 years: 2 doses1, 2 (eight weeks apart)

Age ≥ 5yrs: 1 dose2


1(a) If the child has had a documented COVID-19 infection, providers may at their clinical discretion, and in discussion with parents, decide to administer one initial vaccine dose instead of two.

(b) Children whose second dose is due on or after turning 5 years old, should still receive the second dose at the dosage for a 5-year-old after the recommended interval from the first dose.

2Immunocompromised individuals (incl. those previously immunoablated) are recommended a 3-dose enhanced primary series.




ii. Allowed for vaccination: Other individuals aged 6 months and above

(b) Additional doses (for vaccinated persons)

iii. Recommended for vaccination: Same as (a)(i)

One additional dose



One year (and at least five months from last vaccine dose)



iv. Encouraged for vaccination:

  • Healthcare workers
  • Persons living/working with medically vulnerable individuals

v. Allowed for vaccination: Same as (a)(ii)

Refer to MOH Circular No. 80/2024 for more detailed clinical guidance on the COVID-19 vaccination.


Other Vaccinations

For the use of other vaccinations (e.g. yellow fever for travel to endemic areas, meningococcal for Haj pilgrimage), please refer to the Package Insert (PI), available on the Register of Therapeutic Products (under E-services, Infosearch) on the Health Sciences Authority (HSA) website. The National Immunisation Registry (NIR) only accepts vaccination records for those under the NAIS.

Administering Vaccinations

Healthcare providers should ensure the following during the administration of any vaccine:

  • The vaccine is being given to the correct patient.

  • The vaccine is given at the appropriate time, i.e. appropriate age and interval.

  • The correct vaccine and diluent are given to the patient.

  • The appropriate dose has been measured.

  • The vaccine is being administered via the correct route and technique e.g. subcutaneously vs intramuscularly.

  • The vaccine is administered at the correct site e.g. deltoid vs anterolateral thigh.

  • The vaccination details should be documented in NIR and the clinic's Electronic Medical Records (EMR) accurately with the type of vaccine, diluent, dose, batch, expiry, date and time administered, route, and consent.

After the administration of vaccines, patients should be observed for any immediate post-vaccination adverse effects. Patients should also be advised to monitor for possible side effects of the vaccine once they have been discharged. Details on NAIS for the public are available at Stay One Step Ahead with Vaccinations.






The following data fields should be documented in GPs' case notes as part of good clinical practice for all patients enrolled to their practice.

Submission of data fields marked with asterisks* are required for the Healthier SG Annual Service Fee payments. These are also required for subsidy claims submitted under the Vaccination and Childhood Development Screening Subsidies (VCDSS).

  1. Singapore Drug Dictionary (SDD) code*,^
  2. Date*
  3. Due date of next dose
  4. I acknowledge that I have reviewed the results and care delivery provided, that the vaccinations done are clinically indicated as per MOH's prevailing guidelines
  5. Vaccination Exception Condition(s) (if applicable)*
  6. COVID-19 Vaccination Dose Type​*​
  7. COVID-19 Vaccination Condition(s)*

^Refers to claim code for MOH Healthcare Claims Portal (MHCP) submission.

All vaccination records for NAIS should be promptly notified (i.e. within 72 hours of vaccination) to the national systems i.e., NIR or National Electronic Health Records (NEHR).

Special Subsidise For Vaccinations under Healthier SG

NAIS Vaccinations

For Singapore Citizens (SCs) enrolled in Healthier SG and are eli​gible accordingly to the NAIS, these vaccinations will be subsidised at their own enrolled provider.​ ​GPs are advised to check the enrollee’s eligibility for the vaccination subsidies using the subsidy eligibility tool for VCDSS in MOH Healthcare Claims Portal.

Healthier SG GPs therefore do not need to collect payments from Singapore Citizens enrolled to their clinics. Instead, Healthier SG GPs should claim for the full remuneration using the same process and to the same bank account as for payments made under the Vaccination and Child Development Screening Scheme (VCDSS).4​ 

If the enrollee receives the NAIS vaccination at another provider that they are not enrolled to, prevailing subsidies and co-payment will apply.

​COVID-19 Vaccinations 

COVID-19 Vaccinations are fully-subsidised under the National Vaccination Programme for all Singaporean Citizens, Permanent Resident, Long-Term Pass Holders and certain Short-Term Pass holders. 

Details on the GP Annual Service Fee can be found in the Healthier SG Enrolment Programme Agreement.