The Last of Us has 4 types of infected: clickers, runners

Episode 2 of the HBO series has given us more details about the phases and steps of the cordyceps infection, and presents every enemy in The Last of Us.

All the Infected Zombies in 'The Last of Us,' Explained: Runners

What Are Clickers in 'The Last of Us'? Clicker Origins

the Last of Us': Types of Infected Include Runners, Bloaters

All Types of Infected 'Zombies' in HBO's 'The Last of Us

The Last of Us zombie types and Infected types

The Last of Us Infection Stages and Types, Explained

Infected, The Last of Us Wiki

HBO's The Last of Us: Every type of infected zombie - Polygon

All the Infected Zombies in 'The Last of Us,' Explained: Runners

Infected, The Last of Us Wiki