more serious illness. Some infected people may also transmit the virus to others.
However, this does not mean that vaccination has failed. The crucial distinction is between preventing every infection and reducing the risk of severe disease, hospitalization, and death. These are different outcomes, and a vaccine can provide meaningful protection against the most dangerous consequences of an infection even when it does not prevent every case.
Understanding this distinction is essential when interpreting health headlines, social media posts, and personal stories about people who developed COVID-19 after vaccination. An
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