Because apparently some people are not aware they can look this word up in the dictionary before deciding to stop using it.
https://www.merriam-webster.com/dictionary/pandemic
Merriam-Webster dictionary since 1828
entry for pandemic
Definition of pandemic
 (Entry 1 of 2)
1 : occurring over a wide geographic area (such as multiple countries or continents) and typically affecting a significant proportion of the population pandemic malaria The 1918 flu was pandemic and claimed millions of lives.
2 : characterized by very widespread growth or extent : epidemic entry 1 sense 3 a problem of pandemic proportions
pandemic
plural pandemics
Definition of pandemic (Entry 2 of 2)
1 : an outbreak of a disease that occurs over a wide geographic area (such as multiple countries or continents) and typically affects a significant proportion of the population : a pandemic outbreak of a disease a global pandemic Influenza pandemics seem to strike every few decades and to kill by the million—at least 1m in 1968; perhaps 100m in the "Spanish" flu of 1918-19. — The Economist
2 : an outbreak or product of sudden rapid spread, growth, or development : epidemic entry 2 sense 2 We have been talking about the pandemic of racism for centuries.— Roger Griffith Nobel-prize winning economist Robert Shiller warns a pandemic of fear could tip the economy into an undeserved depression.— Stephanie Landsman