2. Immunity naturally declines
The protection provided by vaccination is strongest in the months following immunization. Over time, antibody levels gradually decline.
Although immunological memory remains active, decreased antibody concentrations can increase the likelihood of infection, especially when exposure levels are high.
3. Individual immune responses differ.
Not everyone develops the same level of protection after vaccination. Age, pre-existing conditions, medications, and overall immune function can all influence the strength of a person’s response to a vaccine.
Some people may still be more vulnerable to infection despite being vaccinated.
Infection and severe illness are different outcomes.
A positive COVID-19 test result does not automatically mean that the vaccination has failed.
Medical experts emphasize that there is a significant difference between preventing an infection and preventing a serious illness.
A vaccinated person may experience:
- Sore throat
- Rhinorrhea
- Those
- Fever
- Fatigue
- Headache
- Muscle pain
- Temporary loss of smell or taste
However, vaccination significantly reduces the likelihood that these symptoms will progress to pneumonia, respiratory failure, admission to intensive care, or death.
This distinction is one of the main reasons why vaccines continue to play a fundamental role in public health.
Most cases in vaccinated people are mild.
For many vaccinated people who contract COVID-19, the symptoms are usually milder and of shorter duration than they would be under other circumstances.
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