Viral Hepatitis in India: Modes of Transmission and Prevention

Viral hepatitis remains one of India’s most pressing public health challenges. With an estimated 40 million people living with Hepatitis B and 6-12 million with Hepatitis C, the disease places a significant burden on individuals, families, and the healthcare system. Understanding how viral hepatitis spreads and the practical steps to prevent it can save lives and protect communities across the country.

What is viral hepatitis? 🔗

Viral hepatitis is an inflammation of the liver caused by hepatitis viruses A, B, C, D, and E. The condition can range from a mild, self-limiting illness to severe disease that progresses to liver fibrosis (scarring), cirrhosis, or liver cancer. While all five types affect the liver, they differ significantly in how they spread, their severity, geographical distribution, and prevention methods.

In India, Hepatitis E is considered the most common cause of acute viral hepatitis, while Hepatitis A is more prevalent among children. Hepatitis B and C are responsible for most chronic liver diseases and account for 96% of all hepatitis-related deaths. This makes understanding transmission routes and prevention strategies particularly important for nursing professionals and healthcare workers.

How viral hepatitis spreads 🔗

Viral hepatitis transmission occurs through different routes depending on the type of virus involved. Understanding these transmission pathways is essential for implementing effective prevention strategies.

Faecal-oral transmission (Hepatitis A and E) 🔗

Hepatitis A and E viruses spread primarily through the faecal-oral route. This occurs when an uninfected person ingests food or water contaminated with the faeces of an infected person. Within families, transmission often happens through dirty hands when an infected person prepares food for others. Waterborne outbreaks are typically associated with sewage-contaminated or inadequately treated water supplies.

India’s socioeconomic diversity means there is significant variation in hepatitis outbreaks across regions. Hepatitis A is estimated to cause over 100 million cases and around 15,000-30,000 deaths annually worldwide. The virus can persist in the environment and withstand food production processes that would typically eliminate bacterial pathogens. Food handlers play a particularly important role in either preventing or transmitting the infection.

Parenteral transmission (Hepatitis B and C) 🔗

Hepatitis B and C spread through blood and body fluids. The primary routes include percutaneous exposure to infectious blood, contaminated needles or syringes, infected blood transfusions, and from mother to child during birth. In healthcare settings, unsafe injection practices pose a serious risk.

Studies from India have documented outbreaks linked to unsafe medical practices. In Gujarat in 2009, an outbreak investigation found that 40% of Hepatitis B positive cases had received therapeutic injections in the preceding 1.5 to 6 months. Similarly, research among tribal groups in the Andaman and Nicobar Islands found unsafe injections to be an independent risk factor for acquiring Hepatitis B.

India’s predominant mode of Hepatitis B transmission is horizontal (person-to-person), with genotypes A and D being the most commonly reported. For Hepatitis C, genotype 3 is most prevalent in India, accounting for about 62% of infections, followed by genotype 1.

Other transmission routes 🔗

Sexual transmission is another route, particularly for Hepatitis B. Close physical contact, including oral-anal sex, can transmit the Hepatitis A virus as well. Vertical transmission from infected mothers to newborns is a significant concern for Hepatitis B and contributes to the pool of chronic carriers in the population. Perinatal transmission may be responsible for around one-third of all adult carriers of Hepatitis B in India.

Recognising the symptoms 🔗

Viral hepatitis progresses through distinct clinical phases. The incubation period varies by virus type-approximately 4 weeks for Hepatitis A, 8 weeks for Hepatitis C, and around 12 weeks for Hepatitis B. During this phase, patients are typically asymptomatic while the virus multiplies.

Prodromal phase 🔗

The prodromal or pre-icteric phase is characterised by non-specific symptoms including profound loss of appetite, malaise, nausea, vomiting, and often fever or right upper abdominal pain. Patients may also experience fatigue, joint pain, and general weakness. During this phase, many patients are misdiagnosed with gastroenteritis or a viral respiratory infection.

Icteric phase 🔗

After 3 to 10 days of prodromal symptoms, clinical manifestations progress to jaundice-a yellowing of the skin and eyes. Patients typically notice their urine turning dark (resembling the colour of tea), followed by pale or clay-coloured stools. Interestingly, systemic symptoms often improve during this phase even as jaundice worsens. The liver becomes enlarged and tender, though its edge remains soft and smooth.

Adults tend to show symptoms more frequently than children. Infected children under 6 years typically do not experience noticeable symptoms, and only 10% develop jaundice. The severity of illness and risk of fatal outcomes increase with age.

Recovery phase 🔗

During the convalescent phase lasting 2 to 4 weeks, jaundice fades and appetite returns. However, symptoms of chronic viral hepatitis can take decades to develop, making regular monitoring essential for patients with Hepatitis B or C infections.

Prevention strategies 🔗

Preventing viral hepatitis requires a multi-pronged approach combining public education, improved sanitation, safe medical practices, and immunisation.

Sanitation and hygiene measures 🔗

For Hepatitis A and E, prevention hinges on adequate disposal of sewage, supplying safe drinking water, and improving personal hygiene practices. Regular handwashing before meals and after using the toilet is fundamental. Food handlers must be trained in proper hygiene techniques, and water quality should be monitored regularly. In food establishments, chlorination of water and use of boiled water for food preparation are recommended practices.

Safe injection and medical practices 🔗

Preventing parenteral transmission requires vigilant screening of blood and blood products and routine testing of tissue and organ donors. India has implemented a policy mandating the use of “Re-use Prevention Syringes” to ensure injection safety. Under the Drugs and Cosmetics Act, it is mandatory to screen every unit of blood for Hepatitis B and C before transfusion.

Healthcare workers should follow strict protocols for handling sharps and disposing of biomedical waste. Needle exchange programmes and harm reduction advice for people who inject drugs are also important components of prevention strategies.

Immunisation 🔗

Vaccination remains one of the most effective prevention measures. Safe and effective vaccines for Hepatitis B have been available since 1982 and have been associated with substantial reductions in acute and chronic infections. The Government of India included the Hepatitis B vaccine in the Universal Immunization Programme, with a birth dose recommended within 24 hours for all institutional deliveries.

For Hepatitis A, the World Health Organization recommends vaccination as part of comprehensive prevention plans, particularly for high-risk populations and food handlers. However, there is currently no vaccine available for Hepatitis C-prevention relies entirely on avoiding exposure to infected blood.

The National Viral Hepatitis Control Program 🔗

India launched the National Viral Hepatitis Control Program (NVHCP) in 2018 with the aim of eliminating viral hepatitis as a public health threat by 2030. The programme provides free drugs and diagnostics for Hepatitis B and C and focuses on prevention, early diagnosis, and treatment across all levels of healthcare.

Key objectives include enhancing community awareness, developing standard treatment protocols, strengthening healthcare infrastructure, and establishing a web-based information management system to track affected individuals. Adult vaccination for Hepatitis B among high-risk populations and healthcare workers has been initiated as a preventive measure under this programme.

Special considerations for nursing practice 🔗

Nurses play a critical role in viral hepatitis prevention and management. This includes patient education about transmission routes and hygiene practices, proper administration of vaccines, adherence to universal precautions when handling blood and body fluids, and recognising early symptoms for timely referral.

Screening pregnant women for Hepatitis B surface antigen (HBsAg) is particularly important to ensure newborns receive timely birth-dose vaccination. In areas where institutional deliveries are below 80%, additional screening efforts help identify at-risk mothers and arrange appropriate interventions including hepatitis B immunoglobulin when required.

What do you think? How can healthcare workers in resource-limited settings effectively implement hepatitis prevention strategies while managing competing priorities? What role should community health workers play in spreading awareness about viral hepatitis in rural India?

References

1. https://www.who.int/india/health-topics/hepatitis
2. https://pmc.ncbi.nlm.nih.gov/articles/PMC5116880/
3. https://pmc.ncbi.nlm.nih.gov/articles/PMC7012144/
4. https://www.who.int/news-room/fact-sheets/detail/hepatitis-a
5. https://pmc.ncbi.nlm.nih.gov/articles/PMC8920195/
6. https://www.cdc.gov/hepatitis/about/index.html
7. https://nvhcp.mohfw.gov.in/common_libs/National-Action-Plan-Combating-Viral-Hepatitis-in-India.pdf
8. https://pmc.ncbi.nlm.nih.gov/articles/PMC8042511/
9. https://www.ncbi.nlm.nih.gov/books/NBK554549/
10. https://www.msdmanuals.com/professional/hepatic-and-biliary-disorders/hepatitis/overview-of-acute-viral-hepatitis
11. https://wwwnc.cdc.gov/travel/yellowbook/2024/infections-diseases/hepatitis-a
12. https://www.cdc.gov/hepatitis/hcp/clinical-overview/index.html
13. https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-019-7534-2
14. https://nvhcp.mohfw.gov.in/about_us