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Fakia PANDEMI: Oase cross-border thinking Pandemic Pandemics are the highest rates of disease spread. A disease is said to be pandemic when it spread rapidly around the world with a high rate of infection.covid-19 infection is not the first pandemic disease to occur. Prior to this, the world had passed several pandemics, such as the swine flu pandemic caused by the HiN1 virus in 2009. At the time, swine flu infected about 1.4 billion people worldwide and left hundreds of thousands dead. 19181920The world is also experiencing an estimated spanish flu pandemic that infects 500 million people worldwide. One of the worst pandemics ever recorded in history is the Black Plague pandemic, often referred to as Black Death. The pandemic killed more than half the population of continental europe at the time.