What is red death in the movie Osmosis Jones?

In the animated movie Osmosis Jones, the "Red Death" is a deadly virus introduced into Frank's body by Thrax, a villainous bacterium seeking to eliminate Jones and conquer Frank's body. The Red Death is portrayed as a large, red, pulsing microorganism that spreads rapidly, creating havoc within the body.

When the Red Death infects Frank, it causes severe symptoms such as fever, fatigue, and hallucinations, leading to a critical state. It quickly overpowers Osmosis Jones' efforts to fight it off and begins to destabilize Frank's overall health.

Ultimately, it takes a combined effort from Jones, Drix the cold capsule, and the other cells within Frank's body to defeat the Red Death and save Frank from its deadly grip.