Hepatitis E Virus (HEV) is a major cause of enteric non-A hepatitis worldwide. Both HEV IgM and IgG are typically detected within one month after infection; IgM persists for about two months, whereas IgG levels persist for months to years after recovery. Approximately 20% of the U.S. population is positive for HEV IgG, indicating that HEV exposure is more common than previously thought.
Hepatitis E virus (HEV) is the major etiologic agent of enterically transmiited non-A, non-B hepatitis worldwide and has a high case-fatality rate in pregnant women. Both IgM and IgG antibody to HEV (anti-HEV) are produced following infection. The titer of IgM anti-HEV declines rapidly during early convalescence; IgG anti-HEV persists and appears to provide at least short-term protection against disease.