Headache

Headache
Info	Strong headache behind the eyes causes discomfort and reduces ability to work
DNA Cost	4
Severity	Slight (2)
Lethality	None (0)
Cure	0.01 (Cure Progress) 0.02 (Research Inefficiency)
Next Symptom	Fever
Info	Disturbance of the pain-sensitive structures around the brain. Reduces concentration.
DNA Cost	5
Infectivity	Slight (1)
Severity	Slight (2)
Lethality	None (0)
Cure	0.01 (Cure Progress) 0.05 (Research Speed)
Next Symptom	Nuchal rigidity
Info	Strong headache behind the eyes causes discomfort and reduces ability to work
Infectivity	None (0)
Severity	Average (9)
Lethality	Very Slight (0.4)
Mutation	-0.5
Cure	0.01
Next Symptom	Ataxia
Info	Strong headache behind the eyes causes discomfort and reduces ability to work
DNA Cost	1 (Evolved from start, but is devolvable)
Infectivity	None (0)
Severity	Slight (1)
Lethality	None (0)
Mutation	-0.5
Cure	0.02
Previous Symptom	Fever
Next Symptom	Paranoia Drowsiness

Headache is a symptom in the Nipah Virus, Mad Cow Disease & Swine Flu. This symptom also appears in the Simian Flu DLC and Multiplayer Mode. It makes it difficult to concentrate on infected, decreasing cure speed.