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.
Vaccination is the administration of antigenic material (a vaccine) to stimulate an individual's immune system to develop adaptive immunity to a pathogen. Vaccines can prevent or ameliorate morbidity from infection.mallpox was most likely the first disease people tried to prevent by inoculating themselves and was the first disease for which a vaccine was produced. The smallpox vaccine was discovered in 1796 by the British physician Edward Jenner, although at least six people had used the same principles years earlier.