Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Scientific researchers have developed a strong, effective vaccine out of the messenger RNA to protect the global inhabitants against the harmful effects of flu. To put it bluntly, the messenger RNA (mRNA) is the genetic material that controls the production of proteins. The mRNA is also scientifically known to control the production of HA and NA in a flu virus. Medical analysts have explained that the human body becomes immune to a flu strain when the human immune system learns to recognize key proteins like HA and NA, on the surface of the flu virus. On the other hand, flu is commonly known to constantly evolves. Hence, the proteins HA and NA change and the human immunity to one year's strain does not extend to following year's. For this reason, a new vaccine has to be produced each year. Most flu vaccines are grown in chicken eggs or cell culture, a process that takes at least six months. Fortunately, the new technique which involves the messenger RNA, has made the availability of the vaccine become more quicker...