Which of the Following Methods Do You Think Would Be

Multiple Choice

Which of the following methods do you think would be the best way to test the effectiveness of a vaccine against avian influenza that is intended for human use?

A) Give the vaccine to a single mouse that has the virus,and assess whether influenza symptoms develop.
B) Give the vaccine to a group of mice that have the virus,and give a placebo to another group of mice that have the virus.Assess whether influenza symptoms develop in either group.
C) Give the vaccine to a single human who has the virus,and assess whether influenza symptoms develop.
D) Give the vaccine to a group of humans who have the virus,and give a placebo to another group of humans who have the virus.Assess whether influenza symptoms develop in either group.