What vaccines are?

Answer 1

Vaccines are medicines containing a preparation of weakened or dead microbes of the kind that cause a particular disease which are administered to stimulate the immune system to produce antibodies against that specific disease. Once your body has been exposed to the pathogen and antibodies have been produced, you may be immune to the disease for life. Other vaccines may require boosters or second doses over time. In the example of the Swine Flu, the vaccines are given each flu season for the type of flu viruses expected to be circulating in that season.

Additional note:

The first vaccine was produced from the blood serum harvested from the pustules on the hands of women who milked cows. Edward Jenner noticed that those women seemed to be immune to smallpox. He reasoned that the women who milked cows got this immunity from a similar, but milder disease called cowpox. When inoculated with the weaker cowpox virus, the body creates antibodies that recognize the same antigen, common to both viruses and gives the person immunity. The name "vaccine" was derived from the Latin word for cow (vacca) for that reason.
A vaccine is an inactive strain of a bacteria that causes disease. In your body you have antigens as an example we'll call them shapes, so say you were ill because some bacteria had entered your body, and bacteria travels by basically piggybacking off blood cells this bacteria was in the shape of a semicircle so your body would keep producing Antigens until one fits (this is a rough explanation) when it fits you body remembers that shape so that if you are introduced to that strain of bacteria again your body can deal with it straight away with out you feeling ill.
A vaccine improves your body's immune system by giving you a tiny amount of weakened microbes, which stimulates your body to recognize it and begin making anti-bodies against it. This will help you in the future when you actually come across the real, stronger microbe, your body will already have knowledge and experience against it.
A vaccination is an injection of a dead bacterium. Your body then recognizes this bacterium and your immune system fights it off. See the related links for more information.
A vaccine is a biological preparation that establishes or improves immunity to a particular disease. Vaccines can prevent or ameliorate the effects of infection by a pathogen. They typically contain one or more adjuvants which are used to boost the immune system. Some vaccines may also contain preservatives which are used to prevent contamination with bacteria and fungi. The general idea behind a vaccine is to purposely inoculate yourself to produce an immunuity to a particular disease. A few different types of vaccines are: 1. Inactivated vaccine- consists of virus particles grown in culture and then killed which means they can't replicate. This vaccine requires booster shots periodically. 2. Attenuated vaccine- live virus particles with very low virulence are administered and they will reproduce but very slowly. Since they reproduce and continue to present antigen beyond the initial vaccination, booster shots are needed less often. 3. Subunit vaccine-presents an antigen to the immune system without introducing viral particles. A weakness of this technique is that isolated proteins can be denatured and will then bind to different antibodies then the proteins in the virus.
A vaccine is a biological preparation that establishes or improves immunity to a particular disease. Vaccines can prevent or ameliorate the effects of infection by a pathogen. They typically contain one or more adjuvants which are used to boost the immune system. Some vaccines may also contain preservatives which are used to prevent contamination with bacteria and fungi. The general idea behind a vaccine is to purposely inoculate yourself to produce an immunuity to a particular disease. A few different types of vaccines are: 1. Inactivated vaccine- consists of virus particles grown in culture and then killed which means they can't replicate. This vaccine requires booster shots periodically. 2. Attenuated vaccine- live virus particles with very low virulence are administered and they will reproduce but very slowly. Since they reproduce and continue to present antigen beyond the initial vaccination, booster shots are needed less often. 3. Subunit vaccine-presents an antigen to the immune system without introducing viral particles. A weakness of this technique is that isolated proteins can be denatured and will then bind to different antibodies then the proteins in the virus.

Answer 2

Vaccinations are methods of introducing antigens into your body to get your body's immune system to react to them by producing antibodies to kill them or inactivate them, which will give you immunity to the antigen. In other words, vaccinations can be shots (or other types of injections under the skin), liquids taken by mouth, or intranasal sprays that give you a small dose of something that can't make you sick itself, but is just like or similar enough to something that would make you sick if you got it in its normal form. They are given to you made with the right antigens to make you immune to the disease or infection from which you want protection.

See the related questions for more information.

Answer 3

Vaccines are medicines containing a preparation of weakened or dead microbes of the kind that cause a particular disease which are administered to stimulate the immune system to produce antibodies against that specific disease. Once your body has been exposed to the pathogen and antibodies have been produced, you may be immune to the disease for life. Other vaccines may require boosters or second doses over time. In the example of the Swine Flu, the vaccines are given each flu season for the type of flu viruses expected to be circulating in that season.

Additional note:

The first vaccine was produced from the blood serum harvested from the pustules on the hands of women who milked cows. Edward Jenner noticed that those women seemed to be immune to smallpox. He reasoned that the women who milked cows got this immunity from a similar, but milder disease called cowpox. When inoculated with the weaker cowpox virus, the body creates antibodies that recognize the same antigen, common to both viruses and gives the person immunity. The name "vaccine" was derived from the Latin word for cow (vacca) for that reason.
A vaccine is an inactive strain of a bacteria that causes disease. In your body you have antigens as an example we'll call them shapes, so say you were ill because some bacteria had entered your body, and bacteria travels by basically piggybacking off blood cells this bacteria was in the shape of a semicircle so your body would keep producing Antigens until one fits (this is a rough explanation) when it fits you body remembers that shape so that if you are introduced to that strain of bacteria again your body can deal with it straight away with out you feeling ill.
A vaccine improves your body's immune system by giving you a tiny amount of weakened microbes, which stimulates your body to recognize it and begin making anti-bodies against it. This will help you in the future when you actually come across the real, stronger microbe, your body will already have knowledge and experience against it.
A vaccination is an injection of a dead bacterium. Your body then recognizes this bacterium and your immune system fights it off. See the related links for more information.
A vaccine is a biological preparation that establishes or improves immunity to a particular disease. Vaccines can prevent or ameliorate the effects of infection by a pathogen. They typically contain one or more adjuvants which are used to boost the immune system. Some vaccines may also contain preservatives which are used to prevent contamination with bacteria and fungi. The general idea behind a vaccine is to purposely inoculate yourself to produce an immunuity to a particular disease. A few different types of vaccines are: 1. Inactivated vaccine- consists of virus particles grown in culture and then killed which means they can't replicate. This vaccine requires booster shots periodically. 2. Attenuated vaccine- live virus particles with very low virulence are administered and they will reproduce but very slowly. Since they reproduce and continue to present antigen beyond the initial vaccination, booster shots are needed less often. 3. Subunit vaccine-presents an antigen to the immune system without introducing viral particles. A weakness of this technique is that isolated proteins can be denatured and will then bind to different antibodies then the proteins in the virus.
A vaccine is a biological preparation that establishes or improves immunity to a particular disease. Vaccines can prevent or ameliorate the effects of infection by a pathogen. They typically contain one or more adjuvants which are used to boost the immune system. Some vaccines may also contain preservatives which are used to prevent contamination with bacteria and fungi. The general idea behind a vaccine is to purposely inoculate yourself to produce an immunuity to a particular disease. A few different types of vaccines are: 1. Inactivated vaccine- consists of virus particles grown in culture and then killed which means they can't replicate. This vaccine requires booster shots periodically. 2. Attenuated vaccine- live virus particles with very low virulence are administered and they will reproduce but very slowly. Since they reproduce and continue to present antigen beyond the initial vaccination, booster shots are needed less often. 3. Subunit vaccine-presents an antigen to the immune system without introducing viral particles. A weakness of this technique is that isolated proteins can be denatured and will then bind to different antibodies then the proteins in the virus.