A live oral vaccine for babies that prevents rotavirus diarrhoea
Rotavirus vaccine
A live vaccine given to babies by mouth to protect them against rotavirus, a common cause of severe diarrhoea and vomiting.
What is Rotavirus vaccine?
The rotavirus vaccine is a live vaccine given to babies as drops by mouth, not as an injection, to protect them against rotavirus, a very common cause of severe diarrhoea and vomiting in young children. In the UK it is offered to babies as part of the UK health service childhood vaccination schedule in the first months of life. The most important safety point is a small risk of intussusception, where the bowel telescopes into itself: parents should seek urgent medical care if their baby has severe tummy pain, repeated vomiting, blood or redcurrant-jelly-like stools, or becomes very pale and floppy. Because it is a live vaccine, it is used with caution in babies who are significantly immunosuppressed.
Education and reference only. This is a plain-language guide to Rotavirus vaccine — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
The rotavirus vaccine is a vaccine that protects babies against rotavirus, a germ that is one of the most common causes of severe diarrhoea and vomiting (gastroenteritis) in babies and young children. It is unusual in that it is given as drops swallowed by mouth rather than as an injection. It is a live vaccine, meaning it contains a weakened form of the virus that prompts the immune system to build protection. In the UK it is offered routinely to babies as part of the UK health service childhood vaccination schedule, given in the early months of life, because rotavirus can make very young children seriously unwell.
How it works
The vaccine contains a weakened, live form of rotavirus that cannot cause the serious illness the real virus does but is enough to teach the baby's immune system to recognise it. After the drops are swallowed, the immune system makes a protective response so that if the baby later meets rotavirus, the body can fight it off and the child is far less likely to become severely unwell. It is given in the first months of life because that is when babies are most vulnerable to severe rotavirus illness, and it works best when given on the schedule and within the recommended age window.
Company & origin
Originated / developed by: Specialist manufacturer.
A live oral vaccine offered to babies in the UK as part of the UK health service childhood vaccination schedule to protect against rotavirus.
Practical use
How to take Rotavirus vaccine
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- It is given by a nurse or doctor as drops swallowed by mouth, not as an injection.
- Follow the UK health service childhood vaccination schedule so it is given at the right ages, as there is a limited age window.
- Tell the team about any weakened immune system in the baby or close family before it is given, as it is a live vaccine.
- Seek urgent care if your baby has severe tummy pain, repeated vomiting, blood or redcurrant-jelly-like stools, or becomes pale and floppy.
- For general information, follow the UK immunisation schedule and the advice your vaccination team gives.
Weighing it up
Advantages & disadvantages of Rotavirus vaccine
Advantages
- Protects babies against rotavirus, a leading cause of severe diarrhoea and vomiting in young children.
- Given simply as drops by mouth rather than as an injection.
- Part of the routine UK childhood immunisation schedule, with a strong record of reducing serious rotavirus illness.
Disadvantages
- Carries a small risk of intussusception, a bowel problem that needs urgent treatment.
- Being a live vaccine, it may need to be avoided in babies who are significantly immunosuppressed.
- Has a limited age window, so it must be given on schedule and cannot easily be caught up later.
Practical use
Good to know
The single most important thing for parents to know is the small risk of a bowel problem called intussusception, where part of the bowel slides into the next part like a telescope. It is rare, but it needs urgent treatment, so seek emergency care straight away if your baby has bouts of severe tummy pain (often with drawing the knees up and crying), repeated vomiting, blood or redcurrant-jelly-like stools, or becomes very pale, floppy or unusually sleepy. Because it is a live vaccine, it may need to be avoided or delayed in babies with a significantly weakened immune system, so tell the nurse or doctor about any immune problems in the baby or close family. The vaccine is given as drops by mouth and has a limited age window, so it is important to follow the UK immunisation schedule and not start it late. If a baby spits out or vomits the dose, the team will advise whether to repeat it. For general information, follow the UK immunisation schedule and the advice your vaccination team gives.
Who should not take it / use with caution
- Babies who have had a serious allergic reaction to a previous dose or an ingredient should not have it.
- Babies with a significantly weakened immune system may need it avoided or delayed, as it is a live vaccine.
- Babies who have had intussusception, or who have a bowel problem that raises the risk, should not have it.
Monitoring
- Watching the baby for severe tummy pain, repeated vomiting or unusual stools after each dose.
- Checking the doses are given within the recommended age window and on schedule.
- Reviewing any immune problems before deciding it is suitable.
Side effects
- Mild diarrhoea, being unsettled or irritable, and sometimes a slight raised temperature.
- Mild tummy discomfort or wind in the days after a dose.
- Rarely, intussusception (the bowel telescoping into itself), which needs urgent medical attention.
Key interactions
- Tell the team about any medicines or treatments that weaken the immune system before the vaccine is given.
- It is usually given at the same visit as other routine baby vaccines, which is safe and planned.
- There are few other routine medicine interactions, but always tell the team about all the baby's medicines.
Available as: An oral liquid given as drops by mouth.
Answers
Rotavirus vaccine: frequently asked questions
What is the rotavirus vaccine for?
It protects babies against rotavirus, a very common cause of severe diarrhoea and vomiting in young children, and is given as drops by mouth on the UK immunisation schedule.
Why is it given as drops and not an injection?
Rotavirus infects the gut, so the vaccine is given by mouth as drops to build protection where it is needed; it is one of the few vaccines given this way.
What is intussusception and what should I watch for?
It is a rare bowel problem where the bowel telescopes into itself; seek urgent care if your baby has severe tummy pain, repeated vomiting, blood or redcurrant-jelly-like stools, or becomes pale and floppy.
Can any baby have it?
Most babies can, but it may be avoided or delayed in babies who are significantly immunosuppressed because it is a live vaccine, so tell the team about any immune problems.
What if my baby spits it out?
If a baby spits out or vomits a dose, the vaccination team will advise whether it needs to be repeated; follow the UK immunisation schedule for general information.
The wider class
About Vaccine (live, oral; rotavirus)
Rotavirus vaccine belongs to the vaccine (live, oral; rotavirus) class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
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Authoritative sources
- BNF
- NICE CKS
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