Pneumonia Signs in Babies
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published AAP, CDC guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect pneumonia signs in babies, here is what the evidence says.
The short answer
Pneumonia is an infection of the lungs that can be caused by viruses or bacteria. Signs in babies include fever, fast or labored breathing, persistent cough, chest retractions, nasal flaring, grunting, poor feeding, and appearing more unwell than with a typical cold. If your baby is breathing fast, has visible chest retractions, or seems very sick, contact your pediatrician immediately -- pneumonia needs medical evaluation and may require antibiotics or hospitalization.
Key takeaways
- Pneumonia is an infection of the lungs that can be caused by viruses or bacteria. Signs in babies include fever, fast or labored breathing, persistent cough, chest retractions, nasal flaring, grunting, poor feeding, and appearing more unwell than with a typical cold. If your baby is breathing fast, has visible chest retractions, or seems very sick, contact your pediatrician immediately -- pneumonia needs medical evaluation and may require antibiotics or hospitalization.
- Usually normal when: Child has a cold with cough and mild fever but is breathing comfortably and eating reasonably well
- Call your doctor if: Baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring
- Varies by age — see the age-by-age breakdown below
“Fever itself is not an illness — rather, it is a sign or symptom that the body is fighting an infection. Fever stimulates certain defenses, such as the white blood cells, which attack and destroy invading bacteria.”
This is one of the most common questions parents ask. Searching for answers means you care.
What Parents Should Know
According to AAP, CDC guidelines, pneumonia is an infection of the lungs that can be caused by viruses or bacteria. Signs in babies include fever, fast or labored breathing, persistent cough, chest retractions, nasal flaring, grunting, poor feeding, and appearing more unwell than with a typical cold. If your baby is breathing fast, has visible chest retractions, or seems very sick, contact your pediatrician immediately -- pneumonia needs medical evaluation and may require antibiotics or hospitalization. At 0-3 months, pneumonia in young babies can be serious and may not present with an obvious cough. Key signs include fast breathing (over 60 breaths per minute), grunting with each breath, flaring nostrils, poor feeding, and lethargy. Any fever (100.4 F or higher) in a baby under 3 months requires same-day medical evaluation. Newborns with pneumonia often need hospitalization for monitoring, IV fluids, and antibiotics. It is generally considered normal when child has a cold with cough and mild fever but is breathing comfortably and eating reasonably well. However, you should contact your pediatrician promptly if baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring.
Normal vs. Concerning
By Age
What to expect by age
0-3 months
Pneumonia in young babies can be serious and may not present with an obvious cough. Key signs include fast breathing (over 60 breaths per minute), grunting with each breath, flaring nostrils, poor feeding, and lethargy. Any fever (100.4 F or higher) in a baby under 3 months requires same-day medical evaluation. Newborns with pneumonia often need hospitalization for monitoring, IV fluids, and antibiotics.
3-6 months
Babies this age with pneumonia typically have fever, cough, and an increased breathing rate (over 50 breaths per minute when calm). You may notice chest retractions (ribs pulling in with each breath) or hear grunting sounds. Your baby may feed poorly or seem more tired than usual. Pneumonia at this age requires medical evaluation -- your doctor will listen to the lungs and may order a chest X-ray to confirm the diagnosis.
6-12 months
Warning signs of pneumonia include fever that persists or worsens after 3 days, a worsening cough, fast breathing, and increased work of breathing. Bacterial pneumonia often follows a viral cold that seemed to be improving, then suddenly worsens. Your baby may seem sicker than expected for a simple cold. Call your pediatrician if you are concerned -- pneumonia is diagnosed through physical exam and sometimes a chest X-ray.
12 months+
Toddlers with pneumonia may have chest pain, especially with coughing or deep breathing. They may breathe faster than normal (over 40 breaths per minute), refuse to eat, or become unusually clingy and lethargic. Fever is common but not always present. Viral pneumonia may improve with supportive care, while bacterial pneumonia requires antibiotics. Some children develop "walking pneumonia" with a persistent cough but relatively mild illness.
What to Tell Your Pediatrician
- Describe when you first noticed pneumonia signs in babies and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if child has had a fever for more than 3 days or cold symptoms suddenly worsen after improvement.
- Mention if child has a persistent cough that keeps them up at night or causes vomiting.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Child has a cold with cough and mild fever but is breathing comfortably and eating reasonably well
- Child is making wet diapers and has some energy to play or interact
- Child's breathing rate is normal for age when calm (under 40-50 depending on age)
- Cold symptoms are gradually improving over 7-10 days
- Child has had a fever for more than 3 days or cold symptoms suddenly worsen after improvement
- Child has a persistent cough that keeps them up at night or causes vomiting
- Child is eating less than half of normal for more than a day
- Baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring
- Child's lips or skin turn blue or very pale, or child is extremely lethargic or difficult to wake -- call 911
What You Can Do at Home
- Keep track of when you notice pneumonia signs in babies — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that child has a cold with cough and mild fever but is breathing comfortably and eating reasonably well — this is generally within the range of normal.
- At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
- While monitoring at home, seek immediate care if baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring.
Related Resources
Fever Decision Tree
Step-by-step guidance for evaluating your baby's fever by age and temperature.
Breathing Difficulty Triage
Assess breathing concerns and know when to seek emergency care.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
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 pneumonia signs in babies normal?
When should I call the doctor about pneumonia signs in babies?
When is pneumonia signs in babies normal?
What causes pneumonia signs in babies?
What should I mention to my pediatrician about pneumonia signs in babies?
Is pneumonia signs in babies normal at 0-3 months?
Is pneumonia signs in babies normal at 3-6 months?
Should I go to the ER for pneumonia signs in babies?
Does pneumonia signs in babies go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Pneumonia Signs in Babies.
Things to mention
- Describe when you first noticed pneumonia signs in babies and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if child has had a fever for more than 3 days or cold symptoms suddenly worsen after improvement.
- Mention if child has a persistent cough that keeps them up at night or causes vomiting.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Child has had a fever for more than 3 days or cold symptoms suddenly worsen after improvement
- Child has a persistent cough that keeps them up at night or causes vomiting
- Child is eating less than half of normal for more than a day
Urgent signs to report immediately
- Baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring
- Child's lips or skin turn blue or very pale, or child is extremely lethargic or difficult to wake -- call 911
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
Bottom line
Most cases of pneumonia signs in babies are normal. Talk to your pediatrician if baby is breathing very fast (over 60 for young infants, over 50 for older babies when calm) with chest retractions or nasal flaring.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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