LIFE SCIENCE

Detailed explanation-1: -During the mid-to late 19th century Pasteur demonstrated that microorganisms cause disease and discovered how to make vaccines from weakened, or attenuated, microbes. He developed the earliest vaccines against fowl cholera, anthrax, and rabies.

Detailed explanation-2: -On July 6, 1885, Louis Pasteur and his colleagues injected the first of 14 daily doses of rabbit spinal cord suspensions containing progressively inactivated rabies virus into 9-year-old Joseph Meister, who had been severely bitten by a rabid dog 2 days before.

Detailed explanation-3: -Then, in 1885, while studying rabies, Pasteur tested his first human vaccine. Pasteur produced the vaccine by attenuating the virus in rabbits and subsequently harvesting it from their spinal cords.

Detailed explanation-4: -Louis Pasteur He was the first to demonstrate that infectious diseases are caused by microbes, disproved the concept of spontaneous generation (the idea that microbes could appear out of nothing), developed the process of pasteurization (as well as being its namesake), and developed some of the world’s first vaccines.