Hepatitis B (sometimes referred to as hep B) is a liver infection caused by the hepatitis B virus (HBV). It typically causes symptoms like stomach pain, dark urine, fatigue, fever, jaundice (yellowing ...
(Photo Credit: E+/Getty Images) Three types of flu viruses affect humans: types A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling ...