A pandemic event is the widespread incidence of a disease that is present through an entire region, continent, or even worldwide. A pandemic flu happens when a new variety of virus invades a community that does not have any resistance to that particular flu strain. Four major pandemics have swept around the globe since 1890.
The first recorded pandemic flu history happened 1890 and was most intense in the United States and Western Europe.
The Spanish Flu circled the world just 28 years later, and was also known as the 1918 flu pandemic. The Spanish flu killed more than 40 million people and as much as one-third of the world’s population was infected with this deadly virus, identified as H1N1.
Over 100,000 people died in 1957 from the Asian flu pandemic, and the strain was known as the H2N2 virus.
In 1968, the H3N2 virus was at the root of the Hong Kong pandemic flu. More than 700,000 perished from that deadly influenza.
It is believed that both these last two strains of the virus, H2N2 and H3N2, evolved through an exchange of mutating genes found in human flu viruses and in avian flu viruses, most likely following an occurrence of...
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