1 Vitamin D Deficiency âLow Vitamin D has been associated with several types of cancer as well as certain autoimmune diseases such as systemic lupus. 2  HIV/AIDS âNearly half of the people who get HIV/AIDS are African American, suffering more deaths than any other race.
The most common vaccine-preventable diseases among travellers are influenza and hepatitis A. Other vaccines to consider for travel include rabies, hepatitis B, typhoid, cholera, yellow fever, Japanese encephalitis and measles. Many vaccines can be given by flexible accelerated schedules to ensure early protection.
Understanding How Vaccines Work Last reviewed Februar y 2013 . Diseases that vaccines prevent can be dangerous, or even deadly. Vaccines greatly reduce the risk of infection by working with the bodyâs natural defenses to safely develop immunity to disease. This fact sheet explains how the body fights infection and how vaccines work to protect people by producing immunity. The Immune Systemâ