Walking Dead is a symptom combo which causes extreme fatigue in infected people. It will be much harder to develop a cure when this combo is active. Insomnia and Anaemia are required. The achievement Brainzzzz is earned for forming the combo.

The name is a reference to the comic book series and television show The Walking Dead.

Symptom Combos in Plague Inc. and Plague Inc: Evolved.
AssassinBath TimeBlind GeniusBlood in the AirBoomerCarpe JugulumCranial DispersionDiscovery ChannelFly MagnetOn The Naughty ListOopsProfuse BleedingProjectile VomitingPublic DefecationRed Ape RedemptionRed RainRude AwakeningRunnerSpitterSwine FluTankUltimate ChristmasVampire BatWalking ContradictionWalking DeadZombie Panic
Community content is available under CC-BY-SA unless otherwise noted.