Organization explains that COVID-19 vaccines protect particularly against severe disease and death, while breakthrough infections remain possible. The organization also notes that protection can decline over time, making current vaccination recommendations relevant to people at higher risk.
Why a positive test does not automatically mean a vaccine has failed
A positive COVID-19 test indicates that the test has detected evidence of infection. It does not, by itself, reveal how severe the illness will become or how much worse the outcome might have been without vaccination.
This distinction is important when
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