cowpox

Some of his patients had gotten cowpox, and recovered from it.

Jenner tried the whole thing again two years later when he found another girl with cowpox.

This makes cowpox one of the most complicated viruses known.

He saw that people who got cowpox did not get sick from smallpox.

The boy did not get sick because he had already had cowpox.

He gave a young boy the cowpox virus to protect him from smallpox.

The first vaccine for smallpox used the results of cowpox infections.

The boy got cowpox and developed a blister in the place where he had been scratched.

He has the merit of having introduced the cowpox into Madeira.

He inoculated a boy with cowpox to test this.

Milkmaids caught cowpox on the job and became immune to smallpox.

This was done by scratching liquid from cowpox sores into the boy's skin.

Edward Jenner gave the boy cowpox in the same way people tried to give smallpox.

On May 14, 1796, he found a milkmaid who had Just developed cowpox.

When the patient recovers from cowpox, the person is immune to smallpox.

He observed that people who caught cowpox while working with cows were known not to catch smallpox.

He began investigating dairy farms in the Gloucestershire area looking for cowpox.

The virus that causes cowpox was used to perform the first successful vaccination against another disease.

Cowpox was the original vaccine of sorts for smallpox.

After an extremely weak bout of cowpox, James recovered.

This was before Jenner discovered the immunization capabilities of cowpox.

Vaccinia is similar to cowpox, but not the same.

It uses the principle of vaccination, where people with cowpox can't get smallpox.

He established a medical practice in London where the focus of his work was the study of cowpox and smallpox.

In addition, he carried out injections against cowpox.