Abstract
A novel hepatitis virus was long suspected as the cause of outbreaks of unexplained
hepatitis with high maternal mortality in Asia. An outbreak of unexplained hepatitis
in a Soviet military camp in Afghanistan led one investigator to ingest a pooled fecal
extract from affected service personnel. This resulted in the discovery of the hepatitis
E virus (HEV) in 1983. Subsequent studies showed that HEV was endemic in large parts
of the developing world. Its incidence in industrialized nations was initially attributed
to travel-related exposure. For many years after the discovery of HEV, it was considered
a “new” virus, and of no relevance to developed countries. This perceived wisdom has
proven to be hopelessly inaccurate. Human infections with HEV are not “new,” and are
of considerable global importance, including in developed countries.
Keywords
hepatitis E virus - HEV - pork - epidemiology - human immunodeficiency virus - HIV
- chronic liver disease