qjxdeg04
@qjxdeg04
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qjxdeg04
@qjxdeg04
Vaccines are a vital tool in preventing the spread of infectious diseases. They work by introducing a weakened or dead form of the virus or bacteria to the body, which triggers an immune response. This response helps the body build immunity to the disease, protecting against future infections. Vaccines save millions of lives each year and are essential for maintaining global health.
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