LAST ADULT

The virus killed every mammal and every human over one year old. One adult didn’t die.

Last Adult cover: lone figure in an empty city

The Regressor Virus (MVR-1)

They named it MVR-1 – the Mammalian Viral Regressor – long after names stopped mattering. It was built in a lab to “reset” broken immune systems, using a designer virus that could lock onto a developmental switch found in all mammals.

That switch was a protein scientists called Transition Factor Omega, a marker that turns on as infants leave their first year of life and shift into a full “adult” immune mode. Every dog, every cat, every cow, every human eventually expresses it. Every mammal depends on it.

When MVR-1 escaped, it followed that marker like a beacon. If a body carried Transition Factor Omega, the virus fused into the cells, shattered their energy systems, and shut the host down. Within days, every mammal on Earth was dead. Every human over one year old collapsed in waves of fever and silence.

Newborns and young toddlers survived. Their bodies hadn’t turned that switch on yet. Cribs, playpens, daycare centers, backseats of cars – all suddenly filled with the only humans left alive. The world became a planet-sized nursery with no one to run it.

The Last Immune Adult

One adult didn’t die.

For reasons no one had time to fully understand, their version of Transition Factor Omega was just different enough that MVR-1 couldn’t lock on. While everyone else over one year old failed, this person stayed upright. Awake. Alone.

This site is built from their surviving notes – part field manual, part confession, part breakdown – as they try and fail to care for more children than any one person could ever hold, feed, or even find. It is the record of a single immune adult in a world of crying toddlers and empty houses, trying to decide what “saving humanity” really means.

Journals

Additional entries will appear as more of the archive is “recovered.”

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