Why does a person suffering once from smallpox not suffer from it again? Name one disease associated with the attack of microbes on the lungs?

Hint: Smallpox caused by the variola virus after the body develops sickness, antibodies area unit created by the body to counter the infection. If the person survives, the antibodies become therefore they are not permitting the body to induce infection once more.

Complete answer:
A person suffering once from smallpox cannot suffer from it again because of antibodies made by the immune system. Disease-associated with the attack of microbes on the lungs is tuberculosis. Tuberculosis (TB) may be a sickness caused by a bacterium known as Mycobacterium tuberculosis.
1) When our body comes across a sickness like variola within the initial time then our system of the body produces antibodies to shield the body and fight for the infectious agent or the germs.
2) So if the germs once more enter within the body then the body acknowledges the germs then kills them as they apprehend the germs and that they have the antibodies to kill the germs.
3) So this can be the rationale that if someone suffers from variola then he or she ordinarily doesn't once more suffer from variola.

Note: The variola immunogen, introduced by a doctor in 1796, was the primary successful immunogen to be developed. When the body senses foreign substances (called antigens), the system works to acknowledge the antigens and acquire them. B lymphocytes are units triggered to form antibodies (also known as immunoglobulins). These proteins lock onto specific antigens.