The contents of vaccines vary, but it usually contains a disease (dead or alive: in weakened or harmless state).
A vaccine works by producing antibodies to immunize the body against the virus that vaccine is intended to protect against.
Yes
active natural
MMR vaccine is for preventing measles, mumps and Rubella.
Yes. They have found a vaccine that works 90 percent.
Pneumococcal polysaccharide disease is caused by a bacteria. It can be deadly but a vaccine was developed to head off the disease before it starts. The vaccine works when a small amount of the bacteria is injected into the patient and his or her immunity works against the disease, causing immunity.
it makes the body create memory cells for future infections
the answer is "works". 'slowly' and 'steadily' are adverbs that describes the word 'works'
How the government works.
There are a number of viral infections for which vaccines are available. Most viral infections, though, have no vaccine available.
Hbv vaccine
no one knows