Rotavirus

Rotavirus most often infects infants and young children, and in children ages 3 months to 2 years, is one of the most common causes of dehydration in children under 5 years old each year in the United States. Although these infections cause relatively few deaths in the United States, diarrhea caused by rotavirus results in more than half a million deaths worldwide every year. This is especially true in developing countries, where nutrition and health care are not optimal.

Signs and Symptoms

Children with a rotavirus infection have vomiting, which are often followed by abdominal cramps and frequent, watery diarrhea. Children who are infected may also have a cough and runny nose. As with all viruses, though, some rotavirus infections cause few or no symptoms, especially in adults.

Sometimes the diarrhea that accompanies a rotavirus infection is so severe that it can quickly lead to dehydration. Signs of dehydration include: thirst, irritability, restlessness, lethargy, sunken eyes, a dry mouth and tongue, dry skin, fewer trips to the bathroom to urinate, and (in infants) a dry diaper for several hours.

Contagiousness

Rotavirus infection is very contagious. The virus passes in the stool of infected persons before and after they have symptoms of the illness. Children can become infected if they put their fingers in their mouths after touching something that has been contaminated by the stool of an infected person. Usually this happens when children forget to stool to confirm that the diarrhea is being caused by rotavirus and not by bacteria. Because antibiotics do not work against illnesses caused by viruses, your doctor will not give your child antibiotics to treat a rotavirus infection.

Home Treatment

To prevent dehydration, follow your doctor's guidance about what your child should eat and drink. Your doctor may suggest that you give your child special drinks that replace body fluids, especially if the diarrhea has been going on for longer than 2 or 3 days.

In general, kids with mild diarrhea who are not dehydrated should continue to eat normally but should receive more fluids. (Fruit juices and soft drinks can make diarrhea worse and should be avoided.) Those who have mild to moderate dehydration should be given an oral rehydration solution in small, frequent amounts to correct the dehydration and then should go back to eating normally. Children who are breastfed should be breastfed throughout. A child who is vomiting will need to eat smaller amounts more frequently. Follow your doctor's guidance and avoid giving your child store-bought medicines for vomiting or diarrhea unless your doctor recommends them.

When to Call Your Child's Doctor

Call the doctor for advice if your child has signs of a rotavirus infection, including watery diarrhea, fever, nausea, and vomiting. Call immediately if your child is showing signs of dehydration.

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