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Why Vaccines Save Lives and Build Immunity | Columbus News
Vaccines are lifesaving shields, having saved over 150 million lives in the past 50 years by training your immune system to fight diseases without causing illness. Babies get shots early because they’re most vulnerable—and multiple doses are often needed for lasting protection against tough illnesses like whooping cough. Mild side effects like fever or fatigue? That’s your body doing its job. Some vaccines, like measles, offer lifelong immunity; others, like flu and COVID, need annual updates as viruses evolve. Even though smallpox is gone thanks to vaccines, staying up-to-date protects…
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