Question

Who discovered vaccination against smallpox?
A. Jenner
B. Pasteur
C. Lister
D. Mayer

Answer 1

Hint:
Smallpox was an infectious disease caused by one or more viruses, it may be variola major or variola minor, This disease was discovered in the seventeenth century and finally was discovered in 1796.

Complete answer:
Smallpox was the deadliest disease and the vaccination for smallpox holds a unique place.
In the year 1796, the vaccine for smallpox was discovered by Edward Jenner.
Jenner discovered that, during the research, he observed that the persons who already were infected with cowpox, didn't get the smallpox.
From this, he came to know that inoculated vaccines protect against the inoculated variola virus.
Initially, cowpox served as a natural vaccine, until the original vaccine was discovered.
In the year of 1970, the world health organization conducted campaigns all over the world.
And this smallpox is of many types.
The oldest smallpox vaccine is made from the calf lymph and it is named dryvex. And it is produced by the company of the American home products.
This dryvex is the oldest vaccine, and it is the live vaccine, where the particles of the virus are used to produce the antibodies.
The immunity developed due to this vaccine was Acquired active immunity.
This dryvex produces 95% of immunization at the same time it has adverse effects in one or two percent.
The modern vaccine that was developed was ivanex, it is a non replicating smallpox vaccine.

Note: Though the vaccine is used to eradicate smallpox, it is infectious to certain persons like Immunocompromised people and it is not safe for the pregnant women, and it is also not given for the women planning for the pregnancy as they cause serious side effects.