Each year hundreds of millions of people suffer from chronic or acute liver disease caused by hepatitis viruses, and over one million die. To mark World Hepatitis Day (July 28th) we bring you a selection of MSF research exploring how to better prevent, identify and treat hepatitis infection in lower-income countries and emergency contexts where the burden is heaviest.

For example, in a South Sudanese camp for displaced people—a type of setting where poor sanitation and water quality regularly lead to hepatitis E outbreaks—MSF and the Ministry of Health (MoH) are conducting the world’s first reactive vaccination campaign against this disease, and evaluating the process and outcomes.

In Cambodia, MSF and MoH collaborators found that a simplified community-based model of care for hepatitis C was safe and highly effective in diagnosing patients and in curing them with new antiviral drugs. It was also cost-effective, according to studies in several countries and patient populations. And these new drugs were safe and effective even in patients also being treated for drug-resistant tuberculosis.