True, and the eating disorder are the physical acts from an emotional/psychological disorder
The system that does all of this is the limbic system I hope you pass
Answer:
how many people are sick , if only certain populations are affected , and where the infected people live
Explanation:
For Patient A since they have been Vaccinated, the immune system will already know what the virus looks like and train itself to combat that specific strain of infection and be able to combat it immediately.
Person B will have to go through the process of the white blood cells combating, T cells, B cells, Macrophages, and getting sick since their body doesn't know how to combat it, after the infection the body will keep a save of the strain for later use.