Enhanced Verifiable CPD from the
University of Birmingham

Dentaljuce Shorts: 500 words, 10 MCQs, on general medicine and surgery.

Hepatitis E

Hepatitis E is a liver inflammation caused by the hepatitis E virus (HEV), a positive-sense, single-stranded, nonenveloped RNA virus. It primarily spreads through the faecal-oral route, similar to hepatitis A.

HEV affects millions globally, with 28 million cases reported in 2013. It is one of five known human hepatitis viruses: A, B, C, D, and E.

Hepatitis E virus
Hepatitis E virus

Signs and Symptoms

Acute Infection

The incubation period for hepatitis E averages 40 days, ranging from 2 to 8 weeks. Symptoms include jaundice, fatigue, and nausea, though many infections are asymptomatic.

Symptoms coincide with elevated hepatic aminotransferase levels. Viral RNA is detectable in stool and blood during the incubation period, and serum IgM and IgG antibodies against HEV appear just before clinical symptoms.

Recovery is marked by virus clearance from blood and the persistence of IgG antibodies.

Chronic Infection

In immunocompromised individuals, such as those with solid organ transplants, hepatitis E can cause a chronic infection. This may lead to severe outcomes like fulminant liver failure or liver cirrhosis.

Other Organs

HEV can also affect other organs, leading to conditions such as acute pancreatitis, neurological complications (e.g., Guillain-Barré syndrome), glomerulonephritis, and severe thrombocytopenia.

Infection in Pregnancy

Pregnant women, particularly in the third trimester, face a more severe course of infection, with mortality rates of 20-25% in some outbreaks. Complications include preterm delivery, abortion, stillbirth, and neonatal death.


HEV belongs to the family Hepeviridae and genus Orthohepevirus. There are eight genotypes, with genotypes 1 and 2 restricted to humans and often causing large outbreaks in developing countries.

Genotypes 3 and 4 infect both humans and animals and are responsible for sporadic cases in both developing and industrialised nations.

Hepatitis E virus in pork liver sausage
Hepatitis E virus in pork liver sausage (the arrows in panel A point to the virion, those in B, C & D point to bound gold nanoparticles used in virus detection)


Hepatitis E primarily spreads through contaminated water, especially following heavy rainfall or flooding. Direct person-to-person transmission is uncommon.

Genotypes 3 and 4 can be transmitted zoonotically through contact with animals or consumption of undercooked meat. Domestic pigs and wild animals like deer are common reservoirs.


Diagnosis relies on blood tests detecting HEV RNA or IgM antibodies. The viraemic window for detecting HEV RNA is about three weeks after symptoms begin.

In immunocompromised individuals, both IgM antibodies and HEV RNA tests are used to confirm infection.



Proper sanitation, including treatment and disposal of human waste, safe water supplies, and good personal hygiene, is very important. Cooking meat at 71°C for five minutes kills the virus.


A recombinant vaccine, HEV 239, is approved for use in China but not in other countries. It has shown efficacy in preventing hepatitis E in trials.


No specific antiviral drugs are established for hepatitis E. Ribavirin may be effective in treating chronic hepatitis E in immunocompromised patients.

Reducing immunosuppressive therapy can help clear the virus in transplant recipients.


Hepatitis E causes about 20 million infections annually, leading to around three million acute illnesses and 44,000 deaths in 2015. Pregnant women are particularly at risk of severe complications.

Outbreaks are common in regions with poor sanitation, such as parts of Asia, Africa, and Central America. Increasing cases are reported in developed countries.

Namibia, Africa
Namibia, Africa

Recent outbreaks have occurred in Uganda, South Sudan, Nepal, and Namibia, highlighting the global health challenge posed by hepatitis E.

Self-assessment MCQs (single best answer)

What is the primary mode of transmission for hepatitis E virus (HEV)?

Which genotype of hepatitis E virus is most commonly associated with chronic infection in immunocompromised individuals?

Which population is at the highest risk of severe outcomes from hepatitis E infection?

What is the most common method for diagnosing an acute hepatitis E infection?

Which of the following is NOT a known complication of chronic hepatitis E infection?

What preventive measure is most important in controlling the spread of hepatitis E?

Which animal is considered a significant reservoir for genotypes 3 and 4 of the hepatitis E virus?

What is the recommended cooking temperature and duration to inactivate the hepatitis E virus in meat?

What is a common neurological complication associated with hepatitis E infection?

What percentage of acute hepatitis E infections are symptomatic?


Dentaljuce provides Enhanced Continuing Professional Development (CPD) with GDC-approved Certificates for dental professionals worldwide.

Founded in 2009 by the award-winning Masters team from the School of Dentistry at the University of Birmingham, Dentaljuce has established itself as the leading platform for online CPD.

With over 100 high-quality online courses available for a single annual membership fee, Dentaljuce offers comprehensive e-learning designed for busy dental professionals.

The courses cover a complete range of topics, from clinical skills to patient communication, and are suitable for dentists, nurses, hygienists, therapists, students, and practice managers.

Dentaljuce features Dr. Aiden, a dentally trained AI-powered personal tutor available 24/7 to assist with queries and provide guidance through complex topics, enhancing the learning experience.

Check out our range of courses, or sign up now!

Membership Options

Dentaljuce offers a range of membership options…

Regular Membership

With enhanced CPD Certificates. Dentaljuce is brought to you by the award winning Masters team from the School of Dentistry, University of Birmingham, UK. All have won awards for web based learning and teaching and are recognised as leaders and innovators in this field, as well as being highly experienced clinical teachers. Full access to over 100 courses, no extras to pay.

Buy Now

£89.00 per year

Student Membership

No Certificates. With universities cutting down on traditional lectures, many students are currently having to rely more on online resources. If you don't need CPD Certificates, we are offering an amazing discount on your Dentaljuce personal membership fee. Special student price just £29 for 12 months individual membership.

Buy Now

£29.00 per year

Excellent content clearly explained.

© Dentaljuce 2024 | Terms & Conditions | Privacy Policy

Recording CPD time: recorded.