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According to Pandemic (and many other sources with similar definitions) a Pandemic is

an epidemic of disease that has spread across a large region, for instance multiple continents or worldwide, affecting a substantial number of people

And according to Dengue fever

Dengue has become a global problem since the Second World War and is common in more than 120 countries, mainly in Asia and South America. (Note: it also exists in North America, Oceania and Africa) About 390 million people are infected a year and approximately 40,000 die.

However, this year we are having dozens of thousands of cases in my country and media only talks about epidemy, also, as far as I know, WHO hasnt declared a Dengue Pandemic.

My question is,

Why Dengue is considered an Epidemic and not a Pandemic?

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  • The WHO is a political organisation. The SARS-CoV-2 outbreak also applied to this definition before the WHO decided to classify it as a pandemic. The pandemic is - apart from the epidemiological term - also a legal term with certain consequences associated with declaring an outbreak a pandemic. Also, a large region is always debatable, as well as a substantial number of people. I'm afraid that there is probably not gonna be a satisfying answer to this question.
    – Narusan
    May 15 '20 at 15:18