A vaccine is essentially a weakened or dead version of the virus. This essentially "infects" you with the virus and causes the body's immune system to respond and create anti-bodies that will kill the real virus if it does ever get into your system.
A vaccine works by producing antibodies to immunize the body against the virus that vaccine is intended to protect against.
No, the "pneumonia vaccine" is to protect against several types of pneumonia that are common and will not protect against the A-H1N1/09 virus. See related questions below.
Tetramune is a vaccine produced to protect against 4 bacteria:diphtheria and tetanus and pertussis and haemophilus
A vaccine normally exposes the body's immune system to dead portions of the virus it is trying to protect against. The immune system will still react to the dead virus and develop anti-bodies to protect against the virus. This will either prevent the person from becoming infected or reduce the length and the severity of the symptoms if they do become infected.
I am not sure what you are asking with this question, but a vaccine normally contains dead portions of the virus it is going to protect you against. The dead virus allows your body to produce anti-bodies capable to defending your body against the live virus if you were to come in contact with it. This could result in you never being infected by this virus, or that the symptomes will not be as harsh as normal.
Varicella Zoster is a type of herpes virus that is commonly the cause of chickenpox. The chickenpox vaccine, often called the Varicella vaccine, is a live virus vaccine to protect against chickenpox, as it can be extremely dangerous in adults. As shingles can also result from the same virus, the vaccine protects against that as well.
When vaccinated, the body produces an immune response similar to when it is attacked by a virus. This includes producing antibodies to fight the vaccine components. The immune system "learns" to recognize the virus in the future, allowing for a faster and more effective response if exposed to the real virus.
In veterinary medicine, that is a vaccine against Distemper, Adenovirus type 2 and Parvo Virus
The measles vaccine works by introducing a weakened or inactive form of the measles virus into the body. This triggers the immune system to produce antibodies that can recognize and fight off the virus if the person is exposed to it in the future. This helps to prevent the person from getting sick with measles.
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Vaccines provide protection by reproducing antibodies which fights the poliovirus, or whatever the virus is the vaccine is intended to protect against. Some vaccines may also protect against certain bacterial infections, such as pneumonia.
killed virus