Acquired immunity.
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You get immunity by having a vaccination or by having the infection itself. The vaccination is the introduction of the pathogen in tiny amounts to kick start your immune system so it knows how to deal with the real thing if you encounter the germ in the environment. A vaccine is the medicine made to introduce the pathogen (infection-causing "bug") into your body in a vaccination. Having immunity is how your body prevents a second infection by the same germ. The first time you catch the germ (or get a vaccination for it), your body responds to cause immunity, so if you run across the same exact germ again later, your body already knows how to prevent an infection again. See the related questions below for more about vaccines and vaccinations.
It is not a disease. It is a disorder that is due to chromosomal informalities during development in the womb.
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Active Immunity
There is innate immunity (that you are born with) and acquired immunity. Acquired immunity you get when you are vaccinated or you get the disease and fight it off. The best example is that of what we call common colds. There are about 100 different viruses that cause them. This is one reason that babies and young children seem to be always be coming down with one or getting over one.
Their immune systems aren't as developed as adults' are. Babies are born with some natural immunity passed down from the mother, but for the most part we humans have to earn our badges of immunity by having the disease first.
When you get a disease and fight it off, your body produces specific antibodies for that disease, tiny organisms meant for that specific disease. While those antibodies remain in your system, you can't contract that same disease again. Vaccinations are modified versions of the disease that they wish to produce immunity against. They produce a very toned-down effect of the actual disease, but cause your body to create the same antibodies, as if you'd had the real thing.
Genetics are a cause of heart disease; parents with a higher risk of heart disease will give birth to offspring of heart disease. The trait of heart disease is then passed down from generation to generation.
It's possible; overwork can wear down the body's immunity and resistance to disease, until illness strikes and the person is forced to take an extended break.
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Down with Disease was created on 1994-03-29.
by catching it and getting over it will sometimes makey you immune but there is really no way to become 'immune' to a diseaseThe immune system has the capacity to adapt to new diseases and generate pathogen-specific immunity.
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Are you coming down = Kommst Du runter (informal) Are you coming down = Kommen Sie runter (formal)