infection simply means that a person becomes infected despite having received vaccination.
It does not automatically mean the vaccine failed.
In fact, breakthrough infections are expected with many vaccines, especially vaccines whose primary benefit is reducing the severity of disease rather than completely blocking infection.
The WHO specifically states that COVID-19 vaccines can prevent severe disease and death even though vaccinated people can still become infected.
Think of vaccination as strengthening the body’s defenses.
It is not necessarily a permanent force field surrounding the body.
A vaccinated person can still