I inevitability a total Pandemic?

It could be anuthing! I want to know what it is is and how its a pandemic.I inevitability a total Pandemic?
The "Spanish" influenza pandemic of 1918–1919, which caused ≈50 million death worldwide, remains an ominous warning to public strength. Many questions more or less its origins, its unusual epidemiologic features, and the basis of its pathogenicity remain unreciprocated. The public health implication of the pandemic therefore remain contained by doubt even as we now grapple near the feared emergence of a pandemic cause by H5N1 or other virus. However, new information going on for the 1918 virus is emerging, for example, sequencing of the entire genome from archival autopsy tissues. But, the viral genome alone is unlikely to provide answers to some critical questions. Understanding the 1918 pandemic and its implication for future pandemics requires sensible experimentation and in-depth historical analysis.
a mutation on the ecoli 1507 strain, this could kill and clear millions of people sick contained by a matter of days, this is the strain that kill and made others sick in the spinach out break and the peanut butter out break. If this strain be to mutate and become stronger and less spatial to sanitizers, afterwards we could be facing a virus that cant be stopped. This is spread through food, and others areas,