A vaccine can help keep people healthy and protect them from a certain virus. For example people in the United States get the flu shot when they get this shot the vaccine wont magically get rid of the virus but rather help them fight it off and protect them in the future if they keep up to date getting the vaccine
A) because the capsule allows <span>bacteria to infect organisms under harsh conditions, such as in the acidic stomach</span>
The process is called osmosis..its the transportation of water