Gastrointestinal

The gastrointestinal tract is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces. The mouth, esophagus, stomach and intestines are part of the gastrointestinal tract.

Hepatitis A Vaccine: What You Need to Know

Hepatitis A is a serious liver disease. It is caused by the hepatitis A virus (HAV). HAV is spread from person to person through contact with the feces (stool) of people who are infected, which can easily happen if someone does not wash his or her hands properly. You can also get hepatitis A from food, water, or object…

Hepatitis B Vaccine: What You Need to Know

Hepatitis B is a serious disease that affects the liver. It is caused by the hepatitis B virus. Hepatitis B can cause mild illness lasting a few weeks, or it can lead to a serious, lifelong illness. Hepatitis B virus infection can be either acute or chronic. Acute hepatitis B virus infection is a short-term illness…

Rotavirus Vaccine: What You Need to Know

Rotavirus is a virus that causes diarrhea, mostly in babies and young children. The diarrhea can be severe and lead to dehydration. Vomiting and fever are also common in babies with rotavirus. Before rotavirus vaccine, rotavirus disease was a common and serious health problem for children in the United States. Almost…