John Carpenter's Tales of Science Fiction: Redhead #1 (2019)

Marnie Young, an executive assistant in San Diego, is a sweet girl who wouldn't hurt a fly. She's also super lonely. But one night, without warning, Marnie has a violent seizure; co-workers recoil in horror as she writhes on the floor. Two days later, Marnie wakes up in a hospital room. As her vision comes into focus, she sees 17 doctors and nurses dead on the floor, blood splattered everywhere. Soon she discovers the shocking truth: Marnie has become lethal, and everyone who comes within three feet of her dies instantly! Which is really going to mess up her dating life (if she had one). Is there a cure? Can anyone get close enough to find out?