|
<<After receiving the vaccine, black volunteers had 78 percent fewer infections, and non-Hispanic minorities had 67 percent fewer infections, than a control group, the study found.>>
Can someone explain to me how you can have a group get 78 % fewer infections? How are these tests being done? Surely the "volunteers" are not people w/out HIV/AIDS that are being exposed to see if they become HIV positive.
I can't understand. Can someone help me out on how these tests are done?
SC
|
Threaded Mode
