The Moderna bivalent COVID-19 vaccine is now available for people aged 18+ who are eligible to have their third or fourth dose.

The COVID-19 vaccine is a safe way to protect you, your family, and your friends from getting sick.

The information on this page is about vaccination for adults aged 18 and older.

Adults can be vaccinated at pharmacies, GPs and SA Health vaccination clinics.

Recommended vaccines

For people aged 18 and older

  • Primary course
    • Pfizer or Moderna COVID-19 vaccines: two doses given eight weeks apart;
    • Novavax COVID-19 vaccine: two doses given three to eight weeks apart; or
    • AstraZeneca COVID-19 vaccine: two doses given twelve weeks apart.
  • Third (booster) dose
  • Fourth (booster) dose for ages 50 and older (optional for ages 30 to 49)

For people aged 18 and older with underlying medical conditions:

  • An additional (third) dose is recommended as part of the primary course for people with severe immunocompromise, given two months after the second dose.
  • A fourth (booster) dose is recommended for people aged 16 and older who have severe immunocompromise, disability with complex health needs, or other complex health conditions that increase risk of severe COVID-19 illness, given three months after the third (booster) dose.

Find out more

Find out more about each vaccine, and what to expect before, during and after your vaccination.

Vaccination after COVID-19 infection

If you have had COVID-19 you should wait to be vaccinated with a COVID-19 vaccine three months after your positive COVID-19 test.

A three month gap between infection and vaccination is likely to lead to a better immune response and result in longer protection from reinfection.

The next scheduled dose of COVID-19 vaccine should be given as soon as possible after three months. You should still have all the recommended doses.

If you have had COVID-19, you do not need to delay other vaccinations – for example, your flu vaccine. But you should not get any vaccine if you are acutely unwell (e.g., if you have a fever).

Why should I get vaccinated?

The vaccines work by teaching your body to fight illness so that you don’t get sick or your symptoms aren’t as bad if you do get sick.

Having the vaccine means you will be less likely to catch COVID-19 and pass it on to others. If you’re vaccinated, you will be able to visit unvaccinated, vulnerable or older family members more safely.

There is still a chance that you will catch COVID-19, but if you do, you are more likely to have no symptoms or mild symptoms.

Safety and efficacy

The COVID-19 vaccines are safe and effective, providing protection against existing variants. The vaccines have been tested extensively in clinical trials and, following the conclusion of the clinical trials, millions of people around the world have been vaccinated against COVID-19.