Arlene Corwin writes

Pandemonium

Words that show lives but tribe:

There to scribe, describe our lives. 

Words that come from health or sickness: mind and body:

Prowess, fearless, speechless, endless;

Dangerousness, selfishness, childishness - nothing escapes;

Sowing seeds of mental shapes 

That come from mind-to-mouth.

Now’s come the time to learn some new:

Epidemic and Pandemic, 

Plus another word to view: Endemic.

Just a few, but whew! 

Hoping that it’s not titanic - the Titanic!

Let me help you.

First came epidemics:

Measles, smallpox, influenzas…

How to conquer, name and aim,

How could and could we control the sum?  

Sometimes.  Some.

Coming back to hit us all the same,

But vanquished?  Germs and viruses not dumb -

Survive  anti-biotically (the foe of symbiotically).

Year twenty-twenty,

Epidemic now pandemic,

Plentiful and more than plenty;

Too, too many - far too many.

Struck by the invisible;

Questionable, susceptible, 

Humans daring not to touch,

Wondering, asking when will it become too much?

And thus we come to the last word:

Endemic: background sound

Though underground many a year

Alive and well and waiting for…

pandemonium | ˌpandɪˈməʊnɪəm |

noun 

wild and noisy disorder or confusion; uproar: there was complete pandemonium—everyone just panicked.

ORIGIN

mid 17th century: modern Latin (denoting the place of all demons, in Milton's Paradise Lost), from pan- ‘all’ + Greek daimōn ‘demon’.

pandemic

(of a disease) prevalent over a whole country or the world.

noun

an outbreak of a pandemic disease: the results may have been skewed by an influenza pandemic.

ORIGIN

mid 17th century: from Greek pandēmos (from pan ‘all’ + dēmos ‘people’) + -ic

endemic

1 (of a disease or condition) regularly found among particular people or in a certain area: complacency is endemic in industry today.

• [attributive] (of an area) in which a particular disease is regularly found: the persistence of infection on pastures in endemic areas.

epidemic

noun

1 an epidemic of typhoid: outbreak, plague, scourge, infestation; widespread illness/disease; Medicine pandemic, epizootic; formal recrudescence, boutade.

2 he's a victim of the county's joyriding epidemic: spate, rash, wave, explosion, eruption, outbreak, outburst, flare-up, craze; flood, torrent, burst, blaze, flurry; upsurge, upswing, upturn, increase, growth, rise, mushrooming; rare ebullition, boutade.

adjective

a widespread occurrence of an infectious disease in a community at a particular time: a flu epidemic.

• a sudden, widespread occurrence of an undesirable phenomenon: an epidemic of violent crime.