Hepatitis E
什么是Hepatitis E？
Hepatitis E is an infectious disease caused by one of the hepatitis viruses (A, B, C, D and E) that infect the liver and cause jaundice (yellow skin). The highest rates of infection occur in regions where low standards of sanitation promote the transmission of the virus.
In general, hepatitis E is a viral disease that resolves by itself followed by recovery. Unlike some of the hepatitis viruses, chronic infection does not occur. Occasionally, a severe form of liver infection occurs with mortality rates of 0.5 to 4.0 percent. The mortality rate among pregnant women in the third trimester may be as high as 20 percent.
如何获得Hepatitis E？
HEV is transmitted by consuming water or food that has been contaminated with human waste. It is often a waterborne disease, and contaminated drinking water has resulted in major epidemics. Raw or uncooked shellfish may also be contaminated and be the source of sporadic cases in endemic areas. Occasionally, the virus may be transmitted by contact with contaminated blood transfusions or use of contaminted syringes and needles.
易感性和抗性
Susceptibility is general. There is no direct person-to-person spread of this virus.
症状是什么？
In children, the infection is mostly asymptomatic. There may be a very mild illness without jaundice that often is not diagnosed. Typical signs and symptoms of hepatitis include jaundice (yellow discoloration of the skin and whites of the eyes, dark urine and pale stools), loss of appetite, an enlarged, tender liver, abdominal pain and tenderness, nausea and vomiting, and fever.
Only a laboratory test can distinguish infection caused by the various hepatitis viruses.
预防措施
由于没有可用的HEV疫苗，良好的个人卫生习惯和避免污染的食物和水是有效的预防方法。
处理
There is no treatment for this disease other than general measures to control symptoms in severe cases.
它常见于哪里？
在中亚和东南亚，北非和西非以及墨西哥都报告了戊型肝炎暴发。
