Antisocial

Antisocial is a 2013 Canadian horror film and the feature film directorial debut of Cody Calahan. The film had its world premiere on 31 July 2013 at the Fantasia Film Festival and a sequel entitled Antisocial 2 was released in 2015. Both films predominantly center on Sam, a young woman that finds herself in the middle of a pandemic where infected people suddenly begin showing strange symptoms and violent behavior.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.