Virus

Human Astrovirus causes infectious diarrhea, nausea, vomiting, fever, and abdominal pain. 

The Hepatitis A virus causes Hepatitis A. The symptoms of this infectious disease of the liver are: nausea, vomiting, diarrhea, jaundice, fever, and abdominal pain. 

Hand, Foot, and Mouth Disease caused by enterovirus in China between 2008 and 2009 was studied and the case fatality ratio was 0.03% (Zhang et al, 2011)

Mortality was higher in infants with severe hepatitis (83%) than in infants with infection of the central nervous system (19%) (Modlin, 1986)

There are two types of Coxsackievirus, Type A and Type B. Type A viruses cause blisters in the mouth, throat, hands, etc. (HFMD). It can also cause inflammation of the eyelids and white part of the eye. Type B causes fever, lung and abdominal pain, and headaches. It may be a cause for diabetes as well. Both types may cause meningitis and other diseases, but this is less likely. 

A total of 428 respiratory HAdV infections were studied from 1991 to 2007 in Korean children and the case fatality ratio was 5.1%