Croup

What Is Croup? Kids with croup have a virus that makes their airways swell. They have a telltale “barking” cough (often compared to the sound of a seal’s bark) and make a […]

Diphtheria

What Is Diphtheria? Diphtheria is a bacterial infection. It spreads easily and happens quickly, and mainly affects the nose and throat. Children under 5 and adults over 60 years old […]

Meningitis in Kids

What Is Meningitis? Meningitis is an inflammation of the meninges (meh-NIN-jeez), the membranes that cover the brain and spinal cord. Some types of meningitis (meh-nen-JYE-tis) can be dangerous and even […]

Respiratory Syncytial Virus (RSV)

Overview What Is Respiratory Syncytial Virus (RSV)? Respiratory syncytial (sin-SISH-ul) virus (RSV) is a major cause of respiratory illness in children. The virus usually causes a common cold. But sometimes it infects […]

The Flu (Influenza)

Overview What Is the Flu? The flu is an infection of the respiratory tract (nose, throat, and lungs). It’s caused by a virus that spreads easily from person to person. […]

Bronchiolitis

What Is Bronchiolitis? Bronchiolitis (brong-kee-oh-LYE-tiss) is an infection of the respiratory tract. It happens when tiny airways called bronchioles (BRONG-kee-olz) get infected with a virus. They swell and fill with mucus, which […]

Adenovirus Infections

Overview What Are Adenoviruses? Adenoviruses (add-eh-noe-VY-ruh-sez) are a group of viruses that can cause infections. Adenovirus infections can happen in kids of any age, but are more common in babies […]

Malaria

What Is Malaria? Malaria is a common infection in hot, tropical areas. Very rarely, it also can happen in temperate climates. Malaria (muh-LAIR-ee-uh) can cause mild illness in some people […]

Bedbugs

What Are Bedbugs? Bedbugs are small, flat, reddish-brown bugs about the size of an apple seed. They can be found all over the world. Bedbugs hide during the day in […]

Typhoid Fever

What Is Typhoid Fever? Typhoid fever is a serious and sometimes life-threatening infection. It mostly affects people in developing countries, where sanitation is poor and getting clean water is a […]

Yersiniosis

What Is Yersiniosis? Yersiniosis is an infection caused by yersiniabacteria. People can get it from eating undercooked meat (especially pork) or drinking unpasteurized milk or contaminated water. Most people with […]

Shigella Infections (Shigellosis)

What Is Shigellosis? An infection with shigella (shih-GEL-uh) bacteria is called shigellosis (shih-guh-LOW-sus). It can cause watery diarrhea or diarrhea with blood and/or mucus in it. What Are the Signs […]

Helicobacter pylori Infections

What Are Helicobacter pylori? Helicobacter pylori (H. pylori) are a type of bacteria. These germs are a common cause of digestive illnesses, including: gastritis: the irritation and inflammation of the […]

Rotavirus

What Is Rotavirus? Rotavirus is a common cause of gastroenteritis, often called stomach flu. The virus infects the stomach and intestines. It causes vomiting and diarrhea, especially in babies and […]

Food Poisoning

What Is Food Poisoning? Food poisoning is caused by bacteria and, sometimes, viruses or other germs. They can get into the food we eat or the liquids we drink. We […]

Gastroenteritis (Stomach Flu) in Kids and Teens

Also called: Stomach Flu, Stomach Bug, Stomach Virus Overview What is Gastroenteritis (Stomach Flu)? Gastroenteritis (gass-troh-en-teh-RYE-tis), often called the stomach flu, is a common illness that causes nausea, vomiting, belly […]

Cholera

What Is Cholera? Cholera is a bacterial infection of the intestines. The good news is, cholera is easy to treat if it’s caught early. People who have mild to moderate cases […]

Dengue Fever

What Is Dengue Fever? Dengue fever is a disease caused by a virus carried by mosquitoes. A person can get dengue (DEN-gey) fever through a mosquito bite, but it does […]

Appendicitis in Kids & Teens

Overview What Is Appendicitis? Appendicitis (uh-pen-di-SYE-tis) is when a small organ called the appendix gets blocked and becomes infected. The appendix is attached to the large intestine in the lower […]