As of 2015, the Centers for Disease Control and Prevention offers a list on its website that details all currently approved vaccines in the United States, including the type of vaccine. The CDC allows the user to organize the list based on vaccine name, abbreviation, trade name and manufacturer.
The CDC vaccine list also includes information about when the vaccine was approved for use, the diseases and viruses it protects against, and the approved age range. Users can print the vaccine list, if they wish.
There are four different types of vaccines, according to MedlinePlus. The four different types of vaccines are live virus vaccines, killed vaccines, toxoid vaccines and biosynthetic vaccines. Live virus vaccines use a weakened form of the virus to encourage the body to create antibodies. Common live virus vaccines include the measles, mumps and rubella (MMR) vaccine and the chickenpox (varicella) vaccine.
Live virus vaccines are often made by passing the virus through cell cultures or animal embryos, states The History of Vaccines. After passing through more than 200 animal embryos, the virus learns how to replicate itself in the animal cells. Although it is able to replicate itself in animal cells, the virus loses its ability to replicate in human cells. Albeit unlikely, a vaccine virus may mutate back into a form that causes disease in humans.