Vaccines are one of the most effective methods of preventing the spread of infectious diseases. Vaccines work by introducing a weakened form of the virus into the body, which allows the immune system to develop a defense against it. By doing this, the body is able to fight off the virus if it is ever exposed to it in the future.
The three diseases that vaccines prevent are measles, mumps, and rubella. Measles is a highly contagious virus that can cause severe complications such as pneumonia, encephalitis, and even death. The MMR vaccine, which stands for measles, mumps, and rubella, has been around since the 1960s and is estimated to have prevented around 20 million deaths worldwide.
The second disease that vaccines prevent is polio. Polio is a virus that causes paralysis and can be prevented with the polio vaccine. This vaccine has been available since the 1950s and has been credited with eradicating polio in many parts of the world.
The third disease that vaccines prevent is tetanus. Tetanus is caused by a bacteria that enters the body through cuts or wounds. The tetanus vaccine is given in three doses over the course of six months, and it helps to protect against this potentially deadly disease.
Overall, vaccines are one of the most effective methods of preventing the spread of infectious diseases. Vaccines have been credited with preventing measles, mumps, rubella, polio, and tetanus.