Actress and producer Kelley Mack, known for her work in hit series like T he Walking Dead, Chicago Med, and more, has passed at 33 following a battle with a glioma, ABC r eports.

Kelley Mack, an actor who starred in "The Walking Dead," died due to complications from the COVID-19 vaccine. Actor Kelley Mack, who was best known for playing Addy on the TV show "The Walking Dead," died at age 33 on Aug. 2, 2025, her sister announced in an Instagram post .

Actress Kelley Mack, known for her appearance in post-apocalyptic zombie drama “The Walking Dead,” has died. She was 33.