What is rotavirus infection?

Rotavirus is a very contagious viral illness. It can cause severe and life-threatening gastroenteritis.

Rotavirus infection is very common children under 3 years old.

What are the symptoms of rotavirus infection?

Rotavirus symptoms normally start between 1 and 3 days after infection with the virus.

The illness usually begins suddenly with vomiting, followed by diarrhoea.

About 1 in 3 people with rotavirus also have a fever in the first few days of the illness.

Symptoms usually last from a few days to a week. Some babies, especially those aged under 3 months, may not show any symptoms.

What causes rotavirus infection?

Rotavirus infection is caused by the rotavirus. Rotavirus usually spreads by contact with:

• an infected person
• vomit or diarrhoea
• contaminated objects, food or water
• droplets made when an infected person coughs or sneezes

Rotavirus spreads very easily. It can be passed on before symptoms appear.

When should I see a doctor?

Most children recover quickly from rotavirus. However, younger children can quickly become dehydrated.

You should see your doctor if your child is not drinking enough, does not seem to be getting better, or has symptoms such as:

• a high fever
• continuous vomiting or green vomit
• lots of diarrhoea or bloody stools (poo)
• dark yellow or brown urine (wee)
• dry lips or a dry mouth
• dizziness

Signs of dehydration in young children can include:

• less than 3 wet nappies a day
• dry mouth or eyes

How is rotavirus infection diagnosed?

Your doctor will first ask about your child’s symptoms. If they suspect rotavirus infection, they will test a sample of your child’s stool (poo) in a laboratory. This is the only way to diagnose rotavirus infection.

How is rotavirus infection treated?

Usually, rotavirus infection causes mild symptoms that do not need specific treatment.

If you or your child has rotavirus infection, drink plenty of fluids to replace the fluids lost to diarrhoea. This is important avoid dehydration.

Depending on your child’s age and normal diet, you can help them keep up their fluids with:

• rehydration solutions
• water
• breastmilk
• formula

If your child is fussy, you can give them diluted fruit juice. Do not give them high sugar drinks — as this can make dehydration worse.

Aim to give them small drinks frequently — about every 5 minutes. If your child continues to vomit, the y may need medicines to stop the vomiting and allow fluids to be absorbed. These medicines need to be prescribed by a doctor.

Breastfed babies may need to be fed more often to avoid dehydration.

Children under 2 years old sometimes need to go to hospital to treat dehydration.

Can rotavirus infection be prevented?

The best way to prevent rotavirus infection in children is to have them vaccinated.

Australia’s National Immunisation Program Schedule recommends rotavirus vaccination for babies under 6 months.

It’s important to have your baby immunised on time. If they don’t have the vaccine on time, they may not be able to be immunised.

Older children and adults should not get the rotavirus vaccine.

What are the recommendations for the rotavirus vaccine?

Vaccination is your child's best protection against rotavirus. See more details about rotavirus vaccination in the table below.

There are 2 different vaccines available against rotavirus. You can talk to your doctor about which one is best for your child.

You can also ask your doctor if your child is eligible for additional free vaccinations based on your situation.

How else can I stop the spread of rotavirus?

There are many ways to prevent the spread of rotavirus.

Practice good hygiene and wash your hands frequently, especially:

• before handling food
• after using the toilet
• after changing a nappy

Never change a baby's nappy on surfaces where food is prepared or eaten.

Be sure to wash any objects that may have been exposed to rotavirus. Use hot water and soap and allow them to fully dry.

If you or your child has diarrhoea:

• avoid entering a swimming pool
• keep your child home from childcare

Rotavirus is a nationally notifiable disease. If your child is diagnosed with rotavirus, your doctor will tell your local public health unit. They will ask who your child has been in contact with, to help prevent further spread of the disease.

Complications of rotavirus infection

Severe dehydration from rotavirus infection can be life-threatening.

Resources and support

For more information on immunisation in Australia, you can check:

• the National Immunisation Program Schedule
• the Australian Immunisation Handbook

If you need advice on what to do next, call healthdirect on 1800 022 222 to speak with a registered nurse, 24 hours, 7 days a week (known as NURSE-ON-CALL in Victoria).