it means that u did something wrong and u want to fix it
Vaccination
Vaccination is of various types. Vaccination involves the injection of weakened form of the parasite, that the body's immune system recognizes and stores it in the memory. This is called Adaptive Active Immunity. Whenever the parasite enters your system again, the B-Cells recognize the foreign particles, thus destroying them.
Maurice Hilleman developed the first effective mumps vaccine in 1963. It was tested and became commercially available in 1967. It was created from live mumps viruses. Before that, starting in 1950, there had been a vaccine made from killed mumps viruses but it was not very effective or long-lasting.
Jerry Johnson(born December 3, 1943 in Miami, Florida) is a former Major League Baseball pitcher from 1968 through 1977.
Vaccination against hepatitis A is unnecessary if you have already had the infection.
Streptomycin was developed in the early 1940s and was the first antibiotic effective against the disease.
Epilepsy is not an infectious disease, so it cannot have a vaccine. It is a physical condition, so trying to get a vaccination against it is like trying to get a vaccination against breaking your arm.
Yearly vaccination against influenza can decrease the risk of pneumonia for certain patients
No vaccines have been developed that are effective against lung or liver fluke infections.
Vaccination
Herd vaccination refers to when the majority of a population or commumity are vaccinated that it creates immunity against a specific disease that they were vaccinated for. It creates some safety for the nonvaccinated individuals since the majority of the group have developed immunity and are protected from contracting and spreading the disease to others.
Active vaccination produces antibodies against the particular organism. These antibodies kill the invading pathogen and protect the body against the disease.