People who are at increased risk of severe disease should be especially attentive to symptoms and discuss appropriate treatment options with a healthcare professional.
Vaccination does not mean someone should ignore illness.
It means their immune system may have additional protection against serious outcomes.
Who Is Most Vulnerable?
COVID-19 does not affect everyone equally.
Risk of severe disease increases with factors such as older age, certain underlying medical conditions and weakened immune function.
WHO continues to identify older adults, people with comorbidities and immunocompromised individuals among groups at greater risk of severe outcomes.
For those people, preventing severe infection can be particularly important.
That is one reason vaccination recommendations are often focused on people at higher risk rather than treating every person as having exactly the same risk.
The Bigger Picture
The COVID-19 pandemic changed the way millions of people think about infectious disease.
It also changed how quickly medical information spreads.
Unfortunately, that information does not always spread accurately.
A single photograph.
A dramatic headline.
A personal story.
A screenshot of someone’s test result.
A viral post can travel around the world before anyone has checked what it actually proves.
One person’s experience can be real without proving a universal conclusion.
A vaccinated person getting COVID is real.
A person experiencing side effects is real.
A person remaining healthy after vaccination is also real.
None of these individual stories, by themselves, tells us the complete picture.
That is why large studies, surveillance systems and evidence from multiple populations are important.
The Most Important Takeaway
There is nothing contradictory about saying:
“Vaccinated people can still get COVID-19.”
and
“COVID-19 vaccination can protect people against severe disease.”
Both statements can be true at the same time.
The purpose of vaccination is not necessarily to make infection mathematically impossible.
The goal is to prepare the immune system so that when it encounters the virus, it can respond more effectively.
WHO’s current guidance says vaccinated people can still become infected, but vaccination remains highly effective against serious disease and death.
And the CDC similarly reports meaningful reductions in hospitalization and critical illness following COVID-19 vaccination, although protection changes over time.
