There’s good news about a COVID vaccine but the discovery of two more worrying cases have raised concerns about its long-term effectiveness.
According to, the Belgian case involved a woman who contracted coronavirus in March and then again in June.
The cases have dampened expectations over how effective a vaccine will be over the long-term and have highlighted the possibility that people will need to get regular injections, similar to the annual flu jab.A volunteer is given the Moderna mRNA-1273 coronavirus vaccine in Detroit, Michigan.
Associate Professor of Microbiology Taghrid Istivan at Melbourne’s RMIT University said the reinfection of people highlighted the importance of vaccination and that multiple doses may be needed.
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