A vaccine consists of a very weak dose of a specific bacterium or virus. The patient's body develops anti-bodies in defense of the invading microbes. Theseremain active in the body in case of a real infection.
They eliminate the risk of transmitting the disease to the person injected
It does the opposite of making you immune; it puts you at higher risk for developing shingles as your immune system weakens with age. You do need a vaccine.
quarantie the area
Ideally a person would never contract a disease that he/she has been vaccinated against. The foundation of vaccination is the idea that you expose a person's immune system to the pathogen that causes a disease so that the immune system will recognize it and kill it off quickly if the person is ever exposed again. In reality, some vaccinations just don't work - there are always a few people that don't respond to the vaccine, or that respond weakly and don't have enough memory cells to fight off the pathogen.
The body's immune system uses a system called artificially acquired immunity to train their B-cells to recognize the foreign proteins of a specific pathogen, a bacteria or virus in order to enable the body to fight off the pathogen if the person should ever be exposed to it.
Immunity.
titer
the inactive form still has the antigens (protein markers) specific to that pathogen on the surface. the immune system develops specific responses to this pathogen when it is encountered after a vaccination. as it is inactive the person does not suffer the effects of this pathogen, but when an active form is encountered later the immune system is quicker to respond due to the fact that it now recognises those antigens.
Jonas Salk
Cancer is not caused by a pathogen, it is caused by a mutated cell which multiplies to create more mutated cells and so on.
Hey there! Louis Pasteur was the first person to make a vaccine against anthrax, 😄
By inhaling pathogens from a sick person's sneeze or cough