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.
Because vaccines are made using parts of the viruses and bacteria that cause disease, the ingredient that is the active component of the vaccine that induces immunity is natural. However, critics point to other ingredients in vaccines or the route of administration as being unnatural.