How does the vaccine work?
vaccines help the body prepare in advance to fight disease and potentially fatal disease. Basically, vaccines give the body a preview of bacteria, virus or toxin, allowing him to learn how to defend himself in advance. If the body is ever attacked by this particular pathogen after the vaccine has done its work, the body's immune system is prepared.
Most vaccines are served in the form of a shot or liquid that is consumed by the mouth. However, some vaccines are inhaled as aerosols or powders. Most vaccines contain viruses or bacteria that have been weakened or killed. Others contain inactivated toxins. In their changed conditions, pathogens of vaccines are usually safe and unable to cause disease. These are these cells that are responsible for the fight against pathogens causing the disease. Once the B-cells are stimulated for action, antibodies and the body of the development of the PS to a particular pathogen are formed. Once a person receives a vaccine and develops immunity, it is usually protectedOut throughout his life.
Sometimes vaccines do not provide lifelong immunity. For example, some vaccines such as tetanus and pertussis are only effective for a limited time. In such cases, the necessary strengthening shots are necessary to maintain continuous vaccine protection. These strengthening doses are given at specific intervals after initial vaccination.
One vaccine, a flu vaccine, must be administered every year. This is because there are many flu strains. A vaccine administered in one year can provide protection against certain flu tribes, but when the flu season starts next year, vaccination may be required against newer or different tribes. In addition, flu vaccines do not provide protection throughout their lives. After just a year, protection can be much less than adequate.
Most human beings are born with limited immunity to various diseases. This immunity is the result of antibodies, toTheir mothers transmit to infants. Unfortunately, these antibodies are able to protect infants only about a year after birth. In addition, there are many serious diseases for which infants do not receive antibodies from their mothers. Many vaccines are listed in the first months of life to protect human beings from childhood to adulthood.