ATAGI recommends a 2023 COVID-19 vaccine booster dose for adults in the following groups, if their last COVID-19 vaccine dose or confirmed infection (whichever is the most recent) was 6 months ago or longer, and regardless of the number of prior doses received:
• All adults aged 65 years and over
• Adults aged 18-64 years who have medical comorbidities that increase their risk of severe COVID-19, or disability with significant or complex health needs.
ATAGI 2023 Booster Advice*
| Age | At risk** | No risk factors |
| <5 years | Not recommended | Not recommended |
| 5-17 years | Consider | Not recommended |
| 18-64 years | Recommended | Consider |
| ≥ 65 years | Recommended | Recommended |
*mRNA bivalent booster preferred; for ages in which a bivalent vaccine is not approved, use a vaccine approved for that age group. A 2023 booster dose should be given 6 months after a person’s last dose or confirmed infection.
**Includes those with a medical condition that increases the risk of severe COVID-19 illness (refer to ATAGI clinical guidance) or those with disability with significant or complex health needs or multiple comorbidities which increase the risk of poor outcomes from COVID-19.
