Vaccines are medicines that train our immune system to fight specific germs. They contain dead or weak germs that help the body recognize and attack real infections if they enter in the future. Class 8 Science Grade 8 Chapter 3 Health: ...
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NCERT Solutions and important questions for Class 8 science for CBSE 2020-2021.
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Acquired immunity is protection developed after our body faces a disease or gets vaccinated. The immune system remembers the germ and fights it faster and stronger if it enters the body again. Class 8 Science Grade 8 Chapter 3 Health: The ...
Yes, the first vaccine was discovered in the late 1700s by Edward Jenner. He used cowpox virus to protect people from deadly smallpox. This discovery started the practice of vaccination worldwide. Class 8 Science Grade 8 Chapter 3 Health: The Ultimate ...
Vaccines prepare our body to fight infections without making us sick. They protect people of all ages from deadly diseases. Vaccines also stop diseases from spreading in the community, saving millions of lives. Class 8 NCERT Science Curiosity Chapter 3 Health: ...
India is one of the world’s biggest vaccine producers. It supplies vaccines to many countries and played a major role during the COVID-19 pandemic by providing affordable and effective vaccines to millions. Class 8 NCERT Science Curiosity Chapter 3 Health: The ...