Supporting the scientific study of sharks, skates and rays since 1983.
Only one of the vaccines, PCV13, is considered safe for children under the age of 2, This vaccine is important because infants and very young children are at higher risk for several dangerous infections, including pneumonia and bacterial meningitis.
Antigen vaccines. Antigen vaccines use specific proteins or parts of proteins (antigens) from the surface of cancer cells to stimulate the immune system to fight these cells. Cancer cell antigens are sometimes mixed with substances to help the vaccine work better.These substances are called adjuvants. 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).