Antibody levels decrease substantially within three months after a booster, according to new clinical trial data.

Liver cancer is now less likely to be caused by hepatitis B or C, but more likely to be caused by fatty liver disease or alcohol.

The engineered protein vaccine was highly effective in a clinical trial but faced a long delay for authorization.

People with HIV are at greater risk for hepatitis B but are less likely to get vaccinated and respond to vaccines.

However, only 6% of this population received hepatitis C care within six months after delivery.

However, people who are not successfully treated may continue to experience declines in mental health.

Two drugs widely used to treat certain autoimmune diseases substantially improved clinical status and reduced deaths.

Even without weight loss, high-intensity exercise improved metabolism in people with NAFLD.

After a long wait, the FDA authorizes Pfizer and Moderna vaccines for children as young as 6 months old.

The virus can be transmitted via respiratory droplets at close range, but it does not spread through the air over longer distances.