Pasteur worked on rabies and cholera vaccine during the emergence of immunology.While culturing a chicken cholera he noted that an old culture was weakened and useful as a vaccine as it:
A)caused disease
B)caused severe cholera symptoms and prevented further infection
C)allowed for the cholera to spread from person to person
D)did not cause disease symptoms and immunized against chicken cholera

Question

Quizplus · Accepted Answer

Pasteur noted that the old culture of chicken cholera did not cause disease symptoms but instead immunized against chicken cholera. This observation led to the development of the first vaccine, which was based on the principle of using weakened forms of a pathogen to induce immunity. This is now a cornerstone of modern immunology.

Pasteur Worked on Rabies and Cholera Vaccine During the Emergence