A Catastrophe of Pandemic Proportions

The epidemic of a major epidemic of disasters in 2018. Bright seeming future is now full of destruction. Two years ago, with the most serious act of terrorism we have ever seen, a small acne epidemic hit the United States. They believe that the small variolis has disappeared, so the children are no longer vaccinated. To the best of our knowledge, the enemy makes this virus as a deadly weapon released in the United States. I think that even enemies do not know how much this simple virus can cause death and destruction.

Pandemic influenza is unpredictable, spreads rapidly all over the world and affects the majority of the population. There are three influenza epidemics, the most recent of which was a pandemic in 2009. This situation first occurred in Mexico caused by H1N1 / 09 virus, also called swine influenza in March 2009. It is subtype of influenza A virus. On 10th August 2010, the WHO Secretary General announced that the influenza A (H1N1) virus has entered the late stage of the epidemic. The Centers for Disease Control and Prevention estimate that nearly 1 million cases of H1N1 influenza worldwide epidemics in 2009 occurred in the United States. Between mid - June 2009 and early July 2009, cases in influenza A (H1N1) doubled in many countries. According to World Health Organization (WHO) statistics, 18,000 people died as a result of H1N1 virus.

The world epidemic of influenza from 1957 to 1958 was called influenza of Asia. Despite the high percentage of infected people, the disease is relatively mild compared to influenza in Spain, resulting in lighter effects and less death. The first wave of the pandemic concentrates on children in school ages, the second wave concentrates on the elderly. Babies and seniors are highly likely to die. It is estimated that influenza in Asia has caused 2 million deaths worldwide. 2009 H1N1 influenza virus is different from seasonal influenza virus. Most people have very mild viruses. However, in only a few people, this virus causes death from viral pneumonia and pulmonary insufficiency. High risk groups have been identified and include patients with chronic respiratory disease patients, pregnant women, obese patients (BMI> 30), indigenous peoples and patients with chronic heart disease, neurological diseases and immune diseases

There are about three epidemics in each century and it can infect the majority of the world's population and kill tens of millions people (see epidemics). According to a study, if a strain with pathogenicity similar to influenza in 1918 emerged today, there is a possibility that 50 to 80 million people will die. New influenza viruses are constantly evolving by mutation and reclassification. The mutation may result in a slight change in the hemagglutinin and neuraminidase antigen on the surface of the virus. This is known as antigenic drift and gradually produces more strains until evolution can infect people with immunity to existing strains. Then, this new variant will sweep the crowd quickly, often replacing the old stock as it will cause a fashion. However, the strain due to the drift is still quite similar to the old stock, and some people still vaccinated them.