Final answer:
The most common outcome in HBV-infected adults is chronic infection, which can lead to cirrhosis, liver failure, and liver cancer. Vaccination is available and recommended for adults at greater risk.
Step-by-step explanation:
The most common outcome in HBV-infected adults is chronic infection. Approximately 6-10% of infected adults become chronic carriers. Chronic infections can progress to cirrhosis or liver failure, and are also associated with liver cancer. It is important to note that vaccination is available and recommended for adults who are at greater risk.