by Valery Bryusov.
This story was written in 1905 and published in Zemnaya Os (The Axis of the Earth) in 1907. The text is available online at the Gaslight website. A more modern translation can be found in THE DEDALUS BOOK OF RUSSIAN DECADENCE: PERVERSITY, DESPAIR & COLLAPSE (2007).
As for the real world - check this out.
Read by Eric Luke of the Extruding America podcast.
“A detachment of well-armed men passed into the town, bearing food and medical first-aid, entering by the north-western gates. They, however, could not penetrate further than the first blocks of buildings, because of the dreadful atmosphere. They had to do their work step by step, clearing the bodies from the streets, disinfecting the air as they went. The only people whom they met were completely irresponsible. They resembled wild animals in their ferocity and had to be captured and held by force.”