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