Digestive

I Think My Baby Has Rotavirus

Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician

Content reviewed against published CDC, AAP, Mayo Clinic guidelines

Editorial policy

Last reviewed:

Digestive issues are common in infants and toddlers. If your baby is experiencing i think my baby has rotavirus, here is what you need to know.

The short answer

Rotavirus causes severe watery diarrhea, vomiting, and fever in babies and young children. Thanks to the rotavirus vaccine, severe cases have become much less common, but vaccinated children can still get milder infections. The illness typically lasts three to eight days, and the primary danger is dehydration. Keeping your baby hydrated is the most important part of treatment.

Key takeaways

  • Rotavirus causes severe watery diarrhea, vomiting, and fever in babies and young children. Thanks to the rotavirus vaccine, severe cases have become much less common, but vaccinated children can still get milder infections. The illness typically lasts three to eight days, and the primary danger is dehydration. Keeping your baby hydrated is the most important part of treatment.
  • Usually normal when: Your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers
  • Call your doctor if: Your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness
  • Varies by age — see the age-by-age breakdown below
“The biggest concern with vomiting is dehydration. Young children can become dehydrated quickly, so it's important to replace fluids. Offer small amounts of an oral rehydration solution frequently.”
— Vomiting in Children, American Academy of Pediatrics (AAP)

Thousands of parents search for this exact thing. You are not alone.

What Parents Should Know

According to CDC, AAP, Mayo Clinic guidelines, rotavirus causes severe watery diarrhea, vomiting, and fever in babies and young children. Thanks to the rotavirus vaccine, severe cases have become much less common, but vaccinated children can still get milder infections. The illness typically lasts three to eight days, and the primary danger is dehydration. Keeping your baby hydrated is the most important part of treatment. At 0-6 months, babies in this age range may have received only one or two doses of the rotavirus vaccine series and are not yet fully protected. Rotavirus in young infants can be particularly dangerous because they dehydrate quickly. Symptoms include profuse watery diarrhea, vomiting, fever, and irritability. If your young baby has frequent watery stools and vomiting, contact your pediatrician promptly and watch closely for signs of dehydration. It is generally considered normal when your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers. However, you should contact your pediatrician promptly if your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness.

Sources: [1], [2], [3]

Normal vs. Concerning

Usually Normal
Worth Discussing
Your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers
Your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness
Your child's appetite is reduced during the illness but they are still drinking fluids and gradually improving
Your baby is vomiting everything and cannot keep any fluids down for more than eight hours, or there is blood in the stool or vomit
Your child's diarrhea is becoming less frequent each day and they are returning to their normal energy level
Your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement

By Age

What to expect by age

0-6 months

Babies in this age range may have received only one or two doses of the rotavirus vaccine series and are not yet fully protected. Rotavirus in young infants can be particularly dangerous because they dehydrate quickly. Symptoms include profuse watery diarrhea, vomiting, fever, and irritability. If your young baby has frequent watery stools and vomiting, contact your pediatrician promptly and watch closely for signs of dehydration.

6-12 months

By six months, most babies have completed their rotavirus vaccine series, which greatly reduces the risk of severe disease. However, breakthrough infections with milder symptoms can still occur. The hallmark of rotavirus is watery diarrhea that can occur ten to twenty times per day along with vomiting. Continue breastfeeding or formula feeding, and offer small, frequent amounts of an oral rehydration solution as recommended by your pediatrician.

12-24 months

Toddlers with rotavirus may have a sudden onset of vomiting followed by watery diarrhea and low-grade fever. The vomiting phase usually lasts one to two days, while the diarrhea can persist for five to seven days. Most toddlers can be managed at home with careful attention to hydration. Offer oral rehydration solution, avoid sugary drinks like juice or sports drinks, and continue a normal diet as tolerated.

24-36 months

Older toddlers tend to handle rotavirus somewhat better than younger babies because their bodies have more fluid reserves. However, the diarrhea can still be severe and disruptive. Focus on hydration, hand hygiene to prevent spread to other family members, and cleaning contaminated surfaces with bleach-based products, as rotavirus is extremely contagious and can survive on surfaces for weeks.

What to Tell Your Pediatrician

  • Describe when you first noticed i think my baby has rotavirus and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement.
  • Mention if your baby has a fever above 102 degrees Fahrenheit (38.9 degrees Celsius) along with the diarrhea.
  • Bring a list of any questions or observations you want to discuss at the appointment.

What Should You Do?

When to take action

Probably normal when...
  • Your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers
  • Your child's appetite is reduced during the illness but they are still drinking fluids and gradually improving
  • Your child's diarrhea is becoming less frequent each day and they are returning to their normal energy level
Mention at your next visit when...
  • Your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement
  • Your baby has a fever above 102 degrees Fahrenheit (38.9 degrees Celsius) along with the diarrhea
  • You are unsure whether your baby is getting enough fluids or how to use oral rehydration solution
Act now when...
  • Your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness
  • Your baby is vomiting everything and cannot keep any fluids down for more than eight hours, or there is blood in the stool or vomit

What You Can Do at Home

  • Keep track of when you notice i think my baby has rotavirus — noting the time of day, duration, and any triggers can help your pediatrician.
  • Remember that your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers — this is generally within the range of normal.
  • At 0-6 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
  • Keep your baby upright for 20-30 minutes after feeding. Note any patterns between feeds and symptoms.
  • While monitoring at home, seek immediate care if your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness.
Triage

Vomiting Decision Tree

Evaluate vomiting severity and decide when to call the doctor.

Triage

Diarrhea Decision Tree

Evaluate diarrhea severity, dehydration risk, and when to act.

Guide

Poop Color & Texture Guide

What your baby's poop color and consistency mean, and when to worry.

Tool

Vaccine Schedule Tracker

Track vaccinations, see what's due, and understand each vaccine.

Milestone

Month-by-Month Development

Detailed monthly development guides from birth through 24 months.

Guide

When to Call the Doctor

General guide on when to call the pediatrician, visit urgent care, or go to the ER.

Frequently asked questions

Is i think my baby has rotavirus normal?
Rotavirus causes severe watery diarrhea, vomiting, and fever in babies and young children. Thanks to the rotavirus vaccine, severe cases have become much less common, but vaccinated children can still get milder infections. The illness typically lasts three to eight days, and the primary danger is dehydration. Keeping your baby hydrated is the most important part of treatment.
When should I call the doctor about i think my baby has rotavirus?
Your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness Your baby is vomiting everything and cannot keep any fluids down for more than eight hours, or there is blood in the stool or vomit
When is i think my baby has rotavirus normal?
Your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers Your child's appetite is reduced during the illness but they are still drinking fluids and gradually improving Your child's diarrhea is becoming less frequent each day and they are returning to their normal energy level
What causes i think my baby has rotavirus?
Rotavirus causes severe watery diarrhea, vomiting, and fever in babies and young children. Thanks to the rotavirus vaccine, severe cases have become much less common, but vaccinated children can still get milder infections. The illness typically lasts three to eight days, and the primary danger is dehydration. Keeping your baby hydrated is the most important part of treatment. Common explanations include: Your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers. Your child's appetite is reduced during the illness but they are still drinking fluids and gradually improving.
What should I mention to my pediatrician about i think my baby has rotavirus?
You should mention i think my baby has rotavirus at your next visit if: Your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement. Your baby has a fever above 102 degrees Fahrenheit (38.9 degrees Celsius) along with the diarrhea. You are unsure whether your baby is getting enough fluids or how to use oral rehydration solution.
Is i think my baby has rotavirus normal at 0-6 months?
Babies in this age range may have received only one or two doses of the rotavirus vaccine series and are not yet fully protected. Rotavirus in young infants can be particularly dangerous because they dehydrate quickly. Symptoms include profuse watery diarrhea, vomiting, fever, and irritability. If your young baby has frequent watery stools and vomiting, contact your pediatrician promptly and watch closely for signs of dehydration.
Is i think my baby has rotavirus normal at 6-12 months?
By six months, most babies have completed their rotavirus vaccine series, which greatly reduces the risk of severe disease. However, breakthrough infections with milder symptoms can still occur. The hallmark of rotavirus is watery diarrhea that can occur ten to twenty times per day along with vomiting. Continue breastfeeding or formula feeding, and offer small, frequent amounts of an oral rehydration solution as recommended by your pediatrician.
Should I go to the ER for i think my baby has rotavirus?
Seek emergency care if your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness, or if your baby is vomiting everything and cannot keep any fluids down for more than eight hours, or there is blood in the stool or vomit. When in doubt, call your pediatrician's after-hours line for guidance.
Does i think my baby has rotavirus go away on its own?
In many cases, i think my baby has rotavirus resolves on its own, especially when your vaccinated child has a mild episode of diarrhea and vomiting lasting a few days with adequate fluid intake and wet diapers. By 24-36 months, older toddlers tend to handle rotavirus somewhat better than younger babies because their bodies have more fluid reserves. However, the diarrhea can still be severe and disruptive. Focus on hydration, hand hygiene to prevent spread to other family members, and cleaning contaminated surfaces with bleach-based products, as rotavirus is extremely contagious and can survive on surfaces for weeks.
CDCAAPMAYO CLINIC

References

  1. [1]Centers for Disease Control and Prevention. Rotavirus - Clinical Information. CDC
  2. [2]American Academy of Pediatrics. Rotavirus. HealthyChildren.org. AAP
  3. [3]Mayo Clinic. Rotavirus - Symptoms and causes. Mayo Clinic

Doctor Visit Checklist

Bring this checklist to your next pediatrician visit to discuss I Think My Baby Has Rotavirus.

Things to mention

  • Describe when you first noticed i think my baby has rotavirus and how it has changed over time.
  • Note your baby's current age and which age-specific patterns you are seeing.
  • Mention if your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement.
  • Mention if your baby has a fever above 102 degrees Fahrenheit (38.9 degrees Celsius) along with the diarrhea.
  • Bring a list of any questions or observations you want to discuss at the appointment.

Observations to share

  • Your baby has watery diarrhea and vomiting lasting more than a few days without clear improvement
  • Your baby has a fever above 102 degrees Fahrenheit (38.9 degrees Celsius) along with the diarrhea
  • You are unsure whether your baby is getting enough fluids or how to use oral rehydration solution

Urgent signs to report immediately

  • Your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness
  • Your baby is vomiting everything and cannot keep any fluids down for more than eight hours, or there is blood in the stool or vomit

My notes

From ismybabyalright.com — free, evidence-based baby health guides

All content follows our editorial policy and is reviewed against published clinical guidelines.

2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members

Related Resources

Poop Color GuideVomiting TriageDiarrhea TriageVaccine TrackerBaby Sign Language GuideBaby Tracker

Bottom line

Most cases of i think my baby has rotavirus are normal. Talk to your pediatrician if your baby shows signs of dehydration: fewer than six wet diapers in 24 hours, no tears when crying, dry mouth, sunken fontanelle, or unusual drowsiness.

Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.

Share:FacebookX

Was this page helpful?

Related Digestive Concerns

My Baby's Belly Looks Swollen

A rounded, slightly protruding belly is completely normal in babies and toddlers due to immature abdominal muscles and their proportionally larger organs. However, if the belly becomes suddenly swollen, feels hard and tight, or is accompanied by pain, vomiting, or changes in bowel movements, it needs medical evaluation as it could signal gas buildup, constipation, or rarely, something more serious.

My Baby Has an Anal Fissure (Blood When Pooping)

A small streak of bright red blood on the surface of your baby's stool or on the diaper is most commonly caused by an anal fissure, which is a tiny tear in the skin around the anus from passing hard stool. Anal fissures are very common in babies and toddlers and usually heal on their own with simple measures like keeping stools soft. While this is rarely serious, any blood in your baby's stool should be mentioned to your pediatrician.

Can Antibiotics Damage My Baby's Gut?

Antibiotics can temporarily disrupt your baby's gut microbiome, which may cause loose stools, fussiness, or diaper rash during and shortly after treatment. However, when antibiotics are medically necessary, the benefits of treating the infection far outweigh the temporary gut disruption. Most babies' microbiomes recover within weeks to months, especially with breastfeeding and a gradual return to normal feeding patterns.

Tummy Massage for Baby Gas

Gentle abdominal massage can help relieve gas and discomfort in babies by encouraging gas to move through the intestines. The technique involves gentle clockwise circular motions on the belly (following the direction of the digestive tract), the "I Love U" stroke pattern, and gentle knee-to-tummy movements. Massage also provides comforting touch that can soothe a fussy baby.

Silent Reflux in Baby

Silent reflux occurs when stomach acid rises into the esophagus and throat but is swallowed back down rather than spit up. Babies with silent reflux may be fussy during or after feeds, arch their back, have hoarse crying, or refuse to eat, but without visible spitting up. It can be harder to diagnose than typical reflux because there is no obvious spit-up.

Bicycle Legs Technique for Gas

Bicycle legs is a simple, effective technique for helping babies pass trapped gas. Gently moving your baby's legs in a cycling motion pushes against the abdomen and helps gas move through the intestines. Combined with gentle belly massage and tummy time, it is one of the best non-medical approaches to gas relief in infants.