Experts believe that the failures of vaccination, the development of superinfection, and a whole variety of reasons is a prerequisite for outbreaks of dangerous diseases.
In fact, pandemics in human history happen quite often. The last major character has got the swine flu epidemic in 2009. Earlier mankind faced with a much more devastating outbreaks – many lives claimed the pandemic plague, cholera, typhoid.
According to experts of the world health organization, now the danger of a global flu epidemic is high. There are several reasons for the increase in population in some areas, the rapid mutation of viruses and the popularity of vaccine refusal.
By the way, because of the massive failure of vaccination in many developed countries are now faced with acute problems with diseases that seemed to have already been virtually defeated. For example, for several years in many countries there is a measles epidemic. In particular, in the CIS countries for many years not seen such a high incidence of measles.
In addition, concerns about “exotic” diseases. A few years ago in West Africa there was a serious outbreak of Ebola and still in some areas marked local epidemic.