March 1, 2022
The Australian Technical Advisory Group on Immunisation (ATAGI) has approved a fourth dose of a COVID-19 vaccine for people with weakened immune systems.
People aged 18 years or older with weakened immune system who received a 3-dose primary course of the COVID-19 vaccine are now recommended to receive the fourth dose ≥ 3 months after their third dose. This is expected to improve protection against symptomatic infection, serious illness, or death from COVID-19 infection.