A lot of people think that JavaScript is a sort of simplified version or spin-off of Java. But in fact the similarity of the names is a coincidence, and the two are unrelated except that both are used to write computer programs that can run inside a web browser.
A vaccine is a medication, usually made from something that is or was alive, that gives immunity to a particular bacterial or viral disease. vaccine is a medication, usually made from something that is or was alive, that gives immunity to a particular bacterial or viral disease.
1 Most vaccines contain a little bit of a disease germ that is weak or dead. 2  Vaccines do NOT contain the type of germ that makes you sick. 3  Some vaccines do not contain any germs. 4  Having this little bit of the germ inside your body makes your body's defence system build antibodies to fight off this kind of germ.accines create immunity that protects you from an infection without causing the suffering of the disease itself. Sometimes vaccines are called immunizations, needles or shots. Here's how vaccines work: 1  Most vaccines contain a little bit of a disease germ that is weak or dead.