Vaccines have already existed for a few centuries and have practically never caused harm to anyone, which is why I believe that vaccines are essential for health since they have been used for such purpose a long time, prevents harmful diseases and has saved countless lives. First, the first vaccine ever created was the smallpox vaccine, discovered in 1796 by Edward Jenner. The smallpox vaccine was used for nearly 300 years before being eradicated, with the exception of two samples contained in laboratories. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Over the years, many other diseases that were once deadly can be easily cured with just one injection. You may think that picking up a needle is unnatural and may disrupt the body's natural processes. This is not necessarily true as it is completely natural for a disease to enter your body so that your body can produce antibodies to fight off future infections. Not only that, but vaccines can save lives by protecting innocent citizens by preventing deadly diseases from attacking the body. The WHO (World Health Organization) estimates that since 2000, the measles vaccine alone has saved approximately 17.1 million lives. The WHO, being a credible source for health and well-being, also seems to support the use of vaccines. This might lead you to claim that a credible source, being a doctor, had written an article about how vaccines can cause autism. This was a doctor and his theory was disproved and he was later not allowed to practice medicine. Think about it, would you rather choose between letting your child die from an easily preventable disease or letting him get a needle in the arm? Surely you would understand the importance of getting vaccinated after someone you know, or yourself, were to be infected and severely affected by a disease that would be easy to cure in the first place. This is why I would like to believe that vaccinations are necessary and play an important role in keeping you safe and paying attention to others around you.