See how vaccines prepare your immune system to fight disease by taking advantage of the fact that the immune system can remember infectious organisms.
Immunity
Chickenpox in adults
For those adults who didn't catch chickenpox in childhood, or who haven't been vaccinated, an attack of chickenpox can produce serious, sometimes lethal, complications.
Amphetamines (speed): what are the effects?
The effects of amphetamines (speed) vary from person to person. There are immediate effects, effects from coming down and long-term effects of amphetamine use.
What your doctor wants you to know about norovirus
Norovirus (winter vomiting bug) is a highly infectious virus, known for causing outbreaks in winter and on cruise ships. Find out what you need to know.
