| A | B |
| influenza | a highly infectious respiratory disease causing fatigue, fever, chills, cough and body aches; caused by a virus |
| measles (rubeola) | an infectious disease (especially among children) which causes a rash, fever, and signs of an upper respiratory infection; caused by a virus |
| rubella (German measles) | an infectious disease (especially among children) that causes fever and small red spots all over the whole body; caused by a virus |
| diptheria (whooping cough) | a serious infectious disease of the throat that causes difficulty in breathing and a cough (sounds like a whoop); caused by bacteria |
| viral meningitis | a serious disease in which the tissues surrounding the brain and spinal cord become infected and swollen, causing severe headache, fever, and sometimes death; caused by a virus |
| bacteria meningitis | a serious disease in which the tissues enclosing the brain and spinal cord become infected and swollen, causing severe headache, fever and sometimes death; caused by bacteria |
| food poisoning | illness of the stomach caused by eating food that contains harmful bacteria; caused by bacteria |
| tuberculosis (TB) | a serious infectious disease in which swollen spots appear on the lungs and other parts of the body; caused by bacteria |
| tetanus (lockjaw) | a disease in which the muscles, especially the jaw muscles, become stiff; caused by bacteria entering the body through cuts or wounds |