Question

Mycobacterium tuberculosis was initially discovered by ___.
A. Edward Jenner
B. Louis Pasteur
C. Robert Koch
D. None of these

Answer 1

Hint:
Mycobacterium tuberculosis is a species of pathogenic bacteria that causes tuberculosis and belongs to the family Mycobacteriaceae. Especially a pathogen of the human respiratory system, it infects the lungs. It has a unique, waxy coating on its cell surface mainly because of the presence of mycolic acid. This coating causes the cells impermeable to Gram staining, so Mycobacterium tuberculosis looks weakly Gram-positive.

Complete step by step answer:
Edward Jenner was a British scientist and physician who introduced the concept of vaccines by developing the smallpox vaccine, the first vaccine in the world. Edward Jenner is famous around the world for his visionary contribution to immunization and the eradication of smallpox. His work is widely considered the basis of immunology.
Louis Pasteur was a French microbiologist and chemist famous for his findings on the principles of vaccination, pasteurization, and microbial fermentation. Pasteur explained that microbes cause disease and found how to make vaccines from attenuated or weakened microbes. He invented the earlier vaccines against anthrax, rabies, and fowl cholera.
A German microbiologist and physician Robert Koch, identified, isolated, and cultured tubercles of Mycobacterium tuberculosis in animal serum. Later, he produced animal models of these bacteria by inoculating the bacillus. His work was published in 1882 in the Journal of the Society of Physiology in Berlin.

Option ‘C’ is correct

Note:
Human beings are the only known reservoirs of M. tuberculosis. The major spread of this disease is through air droplets arising from a person who has the disease either sneezing, coughing, singing, or speaking.