Edward Jenner created the first vaccine to be widely used in 1796; others had done the same before him, but their discoveries were not well-known. Jenner found that milkmaids infected with cowpox did not get smallpox. He tested this theory on a young boy, first exposing him to cowpox, then smallpox. The boy did not develop smallpox, and Jenner's work was published widely.
Louis Pasteurdiscovered vaccine for the first time
Jonas Salk developed the first vaccine in 1952.
The first vaccine was discovered by Edward Jenner and he did some tests on a healthy boy. He inserted the disease of cowpox.He waited a couple of weeks. The boy resulted with pimples all over his hand.
common enough.
The famous scientist Luis Pasteur discovered the above method and vaccine. This method of milk sterilization is called as pasteurization.
Smallpox
He was 2 years old.
Discovered in 1952 by Dr. Salk.
polio
The polio vaccine was first tested in 1952 and marketed in 1955.The telephone was invented in 1876.
Density. Its considered a physical property because of the amount of mass/volume. Its an intensive physical property because you can measure density of solution without changing its chemical identify, it observable. ... Because a material that expands takes up a larger volume and it density decreases.Dec 10, 2014
Jonas Salk