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.
A vaccine stimulates the immune system to produce antibodies to fight a disease. Most vaccines are used to prevent infectious diseases caused by viruses, such as the flu, measles or polio. Cancer vaccines are used to: 1  prevent a cancer from developing (prophylactic, or preventive, vaccine). vaccine stimulates the immune system to produce antibodies to fight a disease. Most vaccines are used to prevent infectious diseases caused by viruses, such as the flu, measles or polio. Cancer vaccines are used to: 1  prevent a cancer from developing (prophylactic, or preventive, vaccine).