Cowpox is very similar to smallpox, which is more dangerous for humans. Edward Jenner promoted the use of cowpox as a vaccination to provide patients immunity from future smallpox epidemics. Patients given cowpox developed
A) passive immunity.
B) active immunity.
C) an inflammatory response that increased the IgG production.
D) high levels of complement.
E) high levels of interferon, although Jenner did not realize these diseases were viral.

Question

Quizplus · Accepted Answer

Patients given cowpox developed active immunity, as their own immune systems were stimulated to produce antibodies and memory cells to protect against future infections.

Cowpox Is Very Similar to Smallpox, Which Is More Dangerous