All of the following statements are true for hepatitis- E
except:
The incubation period ranges from 2-9 weeks with an average of six weeks. Most cases occur in young to middle-aged adults (15-40 years old). 
The disease is generally mild and self-limited, with a low case fatality of about 1 percent. A unique feature is the clinical severity and high case fatality rate of 20-40 percent in pregnant women, especially in the last trimester of pregnancy. 
 Reference: Ananthanarayan Microbiology  8th edition page no  554
Commonest cause for epidemic in India
Affects children more than adults
Causes fulminant hepatic failure
Effects pregnant females and responsible for their mortality
Affects children more than adults