Q- Why a person suffering from smallpox cannot suffer from it again class 9?
Answer- It is right that person suffering from diseases such as smallpox cannot suffer from it again. The main reason behind it is the intelligence of human body. Human body stores the DNA structure of microbes that enter in our body. Whenever that same microbe enters inside human body. So it starts creating or forming antibodies to defense against that microbe and kill it. That’s why a person suffering from smallpox cannot suffer from it again.
Smallpox is an infectious disease and it spread due to virus. This virus includes two agents of Variola virus. The First one is Variola major and second one is Variola minor.
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