Flu Apr 2026

Reviewers on Rotten Tomatoes highlight the "terrifying" doomsday projection and well-executed action scenes.

Unlike the more clinical Contagion , Flu focuses heavily on character relationships, particularly a mother's desperate attempt to save her child. Weaknesses: Flu focuses heavily on character relationships

Flu (Korean: Gamgi ) is a South Korean survival thriller directed by Kim Sung-su. It follows a deadly outbreak of a mutated H5N1 strain that kills its victims within 36 hours. Flu focuses heavily on character relationships