Thhe measles, mumps, and rubella (MMR) vaccine has led to a 99% decrease in cases of these diseases in the United States since its introduction in 1963. Globally, vaccines prevent 2-3 million deaths annually. This demonstrates that vaccines have a long history of successful disease prevention.
As for the COVID-19 vaccines, they underwent rigorous testing and were found to be safe and effective by multiple independent bodies. Real-world data shows they have significantly reduced severe disease, hospitalizations, and deaths, even with the presence of variants.
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