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Symptom Combos

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Symptom Combos are special combinations of symptoms (and in some cases infections) that can affect plague stats, such as slowing Cure processing with the Walking Dead, or increasing infectivity with the Projectile Vomiting. All combos have an achievement associated with them.

CombosEdit

To achieve a combo, one must evolve two or more different symptoms. They range from two tier 1 symptoms to eight symptoms and two infections, so using them is a legitimate strategy for new players and advanced players alike.

Name          Effects                    Symptoms
Projectile Vomiting Increases Infectivity

Vomiting

Coughing

Walking Dead Decreases Cure Production

Insomnia

Anaemia

Profuse Bleeding Slightly increases lethality, greatly increases infectivity

Haemophilia

Skin Lesions

Oops

Lowers productivity but draws attention to the plague.

Diarrhoea

Sneezing

Public Defecation Increases infectivity and cure research speed

Insanity

Diarrhoea

Swine Flu Slight increase in work needed for a cure

Coughing

Diarrhoea

Insomnia

Nausea

Pneumonia

Vomiting

Livestock I

Livestock II

-------- All combos above are standard, the ones below are exclusive to the Necroa Virus. ------------------

Vampire Bat

Increases Severity, Infectivity, and Lethality.

Vampiric Hunger

Bat 1

Bat 2

Blood in the Air

Increases Severity

Cathemeral Shift

Delirium

Hyperosmia

Tank Slight Severity boost

Anabolic Boost

Bone Dysplasia

Spitter Slight Severity boost

Naja Mortis

Enhanced Sensory Integration

Boomer Slight Severity boost

Autothysis

Liquefactive Necrosis

Cranial Dispersion

Severity Boost

Cranial Elephantitis

Air 3

Walking Contradiction Slight Severity decline Photophobia, Cathemeral Shift
Runner Slight Severity boost

Enhanced Motor Control

Engorged Quadriceps

Bath Time Infectivity Boost

Autophagia

Cannibalism

Polyphagia

TriviaEdit

  • The Boomer, Tank, and Spitter combos are based off of zombie types from Valve's Left 4 Dead franchise.

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