Hives
Red, raised marks on the skin that appear suddenly. It is usually itchy or painful. Hives can be caused by an allergy, stress, infection or even heat and cold. Also known as urticaria.
Herpes Zoster (Shingles)
Shingles is a viral infection caused by the same virus that causes chickenpox (varicella virus). Anyone who has had chickenpox can get shingles, but it is most common over age 50. A person can get shingles more than once.   Shingles…
Herd immunity
See Community immunity
Hepatitis B
Hepatitis B is a serious liver infection passed person-to-person through blood and other bodily fluids. Pregnant women can pass Hepatitis B to their babies during childbirth, which is why newborns are given a Hep B vaccine at birth.
Hepatitis A
A highly contagious viral disease people can catch eating or drinking contaminated food or water. While Hep A will go away on its own after a month or two for most people, it can be more serious or fatal for…
Haemophilus influenzae type b (Hib)
A bacterium that may result in severe respiratory infections, including pneumonia and other diseases such as meningitis.
Guillain-Barre Syndrome (GBS)
A rare neurological disease characterized by loss of reflexes and temporary paralysis. Symptoms include weakness, numbness, tingling and increased sensitivity that can spread over the body. GBS can cause muscle paralysis and breathing difficulties. Most people recover but it can…
Febrile
Relating to fever; feverish.
Exposure
When you come in contact with bacteria, viruses, or other substances that can make you sick.
Etiology
The cause of.