Hepatitis B, which is caused by the hepatitis B virus (HBV), is characterized by acute or chronic inflammation of the liver. Researchers and healthcare experts have estimated that roughly two billion people are infected with HBV worldwide, with roughly 600,000 people dying each year from HBV-related liver diseases. While the arrival of recombinant HBsAg vaccines has greatly reduced disease burden over the past two decades, questions surrounding vaccine uptake and effectiveness in adults, particularly in niche patient populations, still remain. GlobalData expects that the growing popularity of pediatric combination vaccines, along with the arrival of vaccines that achieve higher seroconversion rates in high-risk adults, will serve to stimulate growth in the marketplace over the forecast period. Country-specific immunization recommendations and policy implementation will be an essential metric for determining future vaccine uptake in the 7MM (US, France, Germany, Italy, Spain, UK, and Japan) and Canada.