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Chronic HEV infection and progressive disease has been reported in recipients of solid organ transplants, haematological malignancies, HIV patients and those on haemodialysis. Clearance of HEV may occur after reducing immunosuppressive therapy, especially those targeting T-cells, in about one third of cases. Antiviral therapy should be considered for patients for whom immunosuppressive therapy cannot be reduced and for those who do not achieve viral clearance after reducing immunosuppression. For the patients with severe infection, fulminant hepatic failure and acute-on-chronic infection, ribavirin monotherapy should be considered to expedite the viral clearance and recovery. Although ribavirin therapy is contraindicated in pregnancy owing to teratogenicity, the risks of untreated HEV to the mother and fetus are high and treatment may be offered. A twelve-week course of pegylated interferon, ribavirin or a combination of the two agents leads to viral clearance in about two-thirds of patients with chronic hepatitis E. Three- to twelve-month treatment with pegylated interferon clears virus in liver transplant recipients and patients on haemodialysis. In kidney and heart transplant patients where interferon may lead to organ rejection, ribavirin may be given.<\/jats:p>","DOI":"10.3851\/imp2705","type":"journal-article","created":{"date-parts":[[2013,11,5]],"date-time":"2013-11-05T10:03:57Z","timestamp":1383645837000},"page":"125-131","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":15,"title":["Hepatitis E: When to Treat and how to Treat"],"prefix":"10.1177","volume":"19","author":[{"given":"Zaigham","family":"Abbas","sequence":"first","affiliation":[{"name":"Department of Hepatogastroenterology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rafia","family":"Afzal","sequence":"additional","affiliation":[{"name":"Department of Hepatogastroenterology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2013,2,1]]},"reference":[{"key":"bibr1-IMP2705","unstructured":"World Health Organization. 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