Viral gastroenteritis is an infection caused by a variety of viruses that results in vomiting or diarrhea.
Viral gastroenteritis is not caused by bacteria (such as Salmonella or Escherichia coli) or parasites (such as Giardia), or by medications or other medical conditions, although the symptoms may be similar.
Generally, viral gastroenteritis is diagnosed by a physician on the basis of the symptoms and medical examination of the patient.
The viral capsid may be either spherical or helical and is composed of proteins encoded by the viral genome.
The most effective medical approaches to viral diseases, thus far, are vaccination to provide resistance to infection, and drugs that treat the symptoms of viral infections.
Patients often ask for antibiotics, which are useless against viruses, and their misuse against viral infections is one of the causes of antibiotic resistance in bacteria.
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