Med J Aust 2025; 223 (8): 418-422. || doi: 10.5694/mja2.70015 Published online: 20 October 2025 The pathogen of coronavirus disease 2019 (COVID‐19), the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2), continues to evolve, and immune evasion is associated with considerable morbidity and mortality, despite widespread vaccination against the virus.