| 21. | It was during this time that Jenner revisited the connection between cowpox and smallpox.
|
| 22. | Jenner was the first to prove the effectiveness of vaccination with cowpox using experimentation.
|
| 23. | He noted that inoculation with live cowpox afforded protection against the more dangerous smallpox.
|
| 24. | The cowpox virus can infect humans, though the resulting disease is usually relatively mild.
|
| 25. | At some point, the virus in use was no longer cowpox, but vaccinia.
|
| 26. | Dr . Adams believed ( erroneously ) that cowpox and smallpox were the same disease.
|
| 27. | Four orthopoxviruses cause infection in humans : variola, vaccinia, cowpox, and monkeypox.
|
| 28. | On questioning, this subject had never had smallpox, but had previously contracted cowpox.
|
| 29. | The outbreaks were traced to imported cowpox vaccine contaminated with foot-and-mouth virus.
|
| 30. | Vaccinia, cowpox, and monkeypox viruses can infect both humans and other animals in nature.
|
