Flu in Babies: How to Help a Sick Baby With a Cold

We know how worrying your baby's first illness can be, especially for new parents. A stuffy nose, cough, fever, or a baby who suddenly seems a little fussier can ring some alarm bells. When symptoms appear, you'll likely question whether it's just a common cold, the flu, or something else entirely, and, most importantly, how you can help them feel better.

While colds and the flu are both common viral illnesses, they are caused by different viruses and can affect babies in different ways. The good news is that most colds and many cases of the flu can be managed at home with supportive care, plenty of comfort, and by keeping a close eye on your baby’s symptoms.

Understanding the difference between a cold and the flu, knowing what symptoms to look for, and learning how to safely support your baby’s recovery can help you feel more confident when illness strikes. So whether you've landed on this article with a sick infant in hand, or are preparing for that dreaded first illness, we're here to support you!

Can Babies Get the Flu?

When your baby starts showing signs of illness, one of the first questions that may pop into your mind is: Can my baby even get the flu?

Unfortunately, the answer is yes. Influenza (the “flu”) is a contagious respiratory illness caused by influenza viruses and can sometimes cause more intense symptoms than a typical cold.

Flu vs. Cold in Babies: What's the Difference?

So, we know that babies can get the flu, but what about those everyday colds that seem to go around so often?

The tricky part is that colds and the flu can look very similar in babies, especially at first. However, there are some differences that can help you understand what your little one may be dealing with.

Flu vs. Cold in Babies

In general, if you're wondering how to tell if baby has a cold or flu, it is helpful to know that a common cold is usually a milder illness caused by viruses like rhinoviruses. Symptoms often come on gradually and may include a runny or stuffy nose, sneezing, a mild cough, and sometimes a low-grade fever.

The flu, on the other hand, tends to come on more suddenly. Baby flu symptoms tend to be worse than cold symptoms in babies. There are two main types of influenza, which are sometimes referred to as flu A and flu B in babies.

Influenza A in Babies

Influenza A is one of the two main types of influenza viruses that infect humans. It can also infect some animals, which is one of the reasons it is more commonly associated with larger flu outbreaks and, in rare cases, global pandemics. However, for most families, Influenza A is simply one of the common causes of seasonal flu infections that circulate each year.

Influenza B in Babies

Influenza B is the other main type of influenza virus responsible for seasonal flu infections. Unlike Influenza A, which can infect both humans and some animals, Influenza B is mainly found in humans and tends to spread more commonly among school-aged children and families.

While Influenza B generally does not cause the same large-scale outbreaks as Influenza A, it can still make babies and young children feel quite unwell.

What Causes a Cold in Babies?

Babies can catch colds for the same reason older children and adults do. The common cold is not caused by being cold, going outside without enough layers, or sleeping near an open window. Instead, it happens when a baby comes into contact with a virus that infects the upper respiratory tract.

There are hundreds of viruses that can cause cold symptoms, with rhinoviruses being among the most common. These viruses spread through respiratory droplets when an infected person coughs, sneezes, or talks. They can also spread when someone touches a contaminated surface and then touches their eyes, nose, or mouth.

Babies are especially likely to catch colds because their immune systems are still learning how to recognize and fight different viruses. In addition, babies naturally explore the world by touching objects and putting their hands in their mouths, increasing opportunities for exposure.

Flu Symptoms in Babies: Signs Baby Has a Cold

Because babies cannot tell us how they feel, parents often have to look for changes in behaviour and daily routines, whereas spotting the flu in toddlers tends to be easier.

Symptoms of a cold or flu in babies may include:

  • Runny or stuffy nose

  • Sneezing

  • Coughing

  • Fever

  • Fussiness or increased crying

  • Difficulty sleeping

  • Reduced appetite

  • Feeding difficulties due to congestion

  • Increased sleepiness

  • Vomiting or diarrhea due to coughing/mucus

Stages of a Cold in Babies

Most baby colds follow a predictable pattern, although every child and every bout of illness is different.

During the first few days, symptoms often begin with a runny nose, sneezing, mild congestion, and possibly a slight fever. Your baby may become more unsettled as mucus builds up and makes feeding or sleeping more difficult.

Around days three to five, cold symptoms often reach their peak. Congestion may become more noticeable, and coughing may increase as mucus drains down the throat.

During the recovery stage, symptoms gradually improve. Most uncomplicated colds in babies improve within 7 to 10 days, although some symptoms, particularly coughing and congestion, may last longer.

How to Help a Baby with a Cold

While there is no cure for the common cold, there are many ways parents can help their baby stay comfortable while their immune system fights the virus.

Here are some of the most commonly used infant cold remedies:

How to Help a Baby with a Cold

Keep Your Baby Hydrated

For breastfed babies, continue offering breast milk frequently. Breast milk provides both hydration and important immune-supporting components that help protect against infection. For formula-fed babies, continue offering their usual formula. Some babies may prefer smaller, more frequent feeds when they are congested or not feeling well.

Help Relieve a Stuffy Nose

A stuffy nose can be one of the most frustrating symptoms for babies, because young infants are not able to blow their noses.

Saline nasal drops or spray designed for infants can help with this. Saline helps loosen thick mucus, making it easier to remove. After applying saline, parents can gently use a bulb syringe or nasal aspirator to clear mucus from the nostrils if needed.

It is often helpful to clear your baby’s nose before feeds and bedtime, as congestion can make it difficult for babies to coordinate sucking, swallowing, and breathing.

Let Your Baby Get Plenty of Rest

When babies are sick, their bodies use extra energy to support the immune system, so it is normal for them to seem more tired than usual.

Allow your baby to rest as much as they need, while still following safe sleep recommendations. Babies should always sleep on their backs on a firm, flat sleep surface, even when they have a cold.

Use a Cool-Mist Humidifier

Dry air can sometimes make nasal congestion and coughing feel worse. A cool-mist humidifier in your baby’s room may help add moisture to the air, which can make breathing feel more comfortable.

If you use a humidifier, it is important to clean it regularly according to the manufacturer’s instructions. Dirty humidifiers can become a source of mold or bacteria, which may worsen respiratory symptoms rather than help.

Keep Feeding as Usual

When babies are sick, it is common for their appetite to change. Congestion can make feeding more difficult, and some babies may want shorter but more frequent feeds.

For babies under 12 months, breast milk or infant formula should remain their primary source of nutrition. Solid foods, if your baby has already started them, can continue as tolerated, but milk feeds remain the priority during illness.

If your baby is consistently refusing feeds, has significantly fewer wet diapers, or seems too tired to eat, contact your healthcare provider.

Comfort Your Baby

Sometimes the most helpful thing you can provide is simply comfort. Holding your baby, offering skin-to-skin contact, rocking them, singing, or maintaining familiar routines can help them feel secure while they recover.

Infant Cold Medicine: Can Babies Take Cold or Flu Medicine?

When your baby is feeling sick, it’s completely natural to want to reach for the things that help you feel better when you’re under the weather. However, flu and cold medicine for babies is often not recommended unless specifically advised by a healthcare provider.

Many combination cold and flu products are not safe for babies because they may contain ingredients that are not suitable for young children and can increase the risk of side effects. They also do not help shorten the length of a cold or flu.

If your baby has a fever or seems uncomfortable, your healthcare provider can recommend the safest options based on their age and weight. Always follow dosing instructions carefully and avoid giving any medication unless you know it is appropriate for your baby.

Infant Flu Shot

The seasonal flu vaccine is one of the best ways to protect babies and young children from influenza.

The Centers for Disease Control and Prevention and many pediatric health organizations recommend annual influenza vaccination for everyone aged 6 months and older.

Babies younger than 6 months are not eligible for the flu vaccine, so protection relies heavily on a strategy called cocooning. This means that parents, siblings, caregivers, and other close contacts get vaccinated to reduce the likelihood of bringing influenza into the home.

How to Prevent the Flu in Babies

Although it is impossible to prevent every cold or respiratory infection, there are several steps parents can take to reduce the spread of viruses.

Hand Hygiene

Hand washing is one of the simplest and most effective ways to reduce the spread of germs. Caregivers should wash their hands with soap and water before feeding, preparing bottles, handling pacifiers, or caring for a sick baby.

Encourage older siblings to wash their hands regularly as well, especially after school, daycare, or activities where they have contact with many people.

If soap and water are unavailable, alcohol-based hand sanitizer can help reduce the spread of many germs as well.

Limit Exposure to Sick People

This does not mean families need to avoid all outings or social interactions. Instead, use practical precautions, such as asking visitors to postpone visits if they are feeling unwell and avoiding close contact with people who have symptoms like fever, coughing, or vomiting.

Stay Up to Date on Vaccinations

Keeping your baby’s routine vaccinations up to date, along with ensuring caregivers are vaccinated when recommended, creates an additional layer of protection.

Clean Frequently Touched Surfaces

Respiratory viruses can spread through contaminated surfaces. Regularly cleaning objects that are frequently touched, such as toys, bottle parts, pacifiers, phones, and door handles, can help reduce germ transmission.

When to Call Your Pediatrician

While most baby colds improve with time and supportive care, there are situations where medical advice should be sought.

Contact your healthcare provider if:

  • Your baby is younger than 3 months and has a fever

  • Your baby is having difficulty breathing

  • Your baby’s lips or skin appear blue or gray

  • Your baby is unusually difficult to wake or very lethargic

  • Your baby is refusing multiple feeds

  • Your baby has signs of dehydration, such as fewer wet diapers

  • Symptoms are getting worse instead of improving

  • You are concerned about your baby’s overall condition

Parents know their babies best. If something feels different or concerning, it is always appropriate to reach out for guidance.

Meet Our European Alpine Cold Defense Kit! (6 Months+)

During cold and flu season, many parents look for gentle baby cold remedies when congestion and respiratory symptoms appear.

Our European Alpine Cold Defense Kit includes two traditional herbal balms designed for use as part of a comforting routine for children ages 6 months and older.

Stadelmann Engelwurzbalsam - Angelica Root Balm

Angelica root balm is a traditional herbal preparation that has been used in European wellness practices for generations. Parents often incorporate aromatic balms like this into calming bedtime routines or gentle massage rituals during the colder months.

When presented with the flu in babies under 6 months, you can use this balm by rubbing a small amount onto a cloth and hanging it at head height in the crib so the baby can inhale the scent. For older infants, it can be applied directly on the chest or around the nose, or diluted with a carrier oil.

Stadelmann Thymian-Myrte-Balsam für Kinder - Thyme and Myrtle Balm for Children

Made with thyme, myrtle, and Swiss pine, this eucalyptus-free balm offers a soothing, natural aroma that is released with your child’s body heat.

Simply massage a small amount onto your little one’s chest, back, or feet to create a calming bedtime or comfort routine during cold season. For babies under 6 months, use only a very small amount and dilute with a carrier oil or calendula ointment.

European Alpine Cold Defense Kit for Babies

Final Thoughts on Baby Cold

Watching your baby deal with a cold or flu can be difficult, but most respiratory illnesses improve pretty quickly with time and a little extra TLC.

The most important things parents can do are keep their baby comfortable, support hydration, ease congestion, encourage rest, and watch for signs that their baby may need extra medical care.

FAQs on Baby Flu

Here are some of the most asked questions about the cold and flu in infants.

How Long Does a Cold Last in Babies?

Most baby colds last about 7 to 10 days, although symptoms like coughing or mild congestion may continue for up to two weeks or longer. The duration depends on the virus involved and your baby’s age and overall health.

What to Do When Baby Has a Cold?

When your baby has a cold, focus on comfort care. Offer regular breast milk or formula feeds, use saline drops to help with congestion, allow extra rest, and provide plenty of cuddles and reassurance.

How Do You Treat a Cold in an Infant?

There is no medication that cures the common cold. Treatment focuses on relieving symptoms while your baby’s immune system clears the virus. Supportive care, such as hydration, nasal saline, rest, and comfort, is usually recommended.

Is it Normal for Infants to Get a Cold?

Yes. It is very common for infants to get colds, especially once they begin interacting with other children or caregivers outside the home. Many young children experience several colds each year as their immune systems develop.

Can a 2 Month Old Fight a Cold?

Yes, many 2-month-old babies recover from mild colds with supportive care. However, because very young infants are more vulnerable to complications, parents should contact their healthcare provider if their newborn has a cold.

How to Tell If Baby Has RSV or a Cold?

RSV (respiratory syncytial virus) can initially look similar to a common cold, with symptoms like congestion, coughing, and a runny nose. However, RSV can sometimes cause more significant breathing problems, especially in young infants. Signs that may require medical attention include rapid breathing, wheezing, difficulty feeding, fewer wet diapers, or signs that your baby is working harder to breathe.

More Helpful Guides!

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Winter Newborn Essentials

Disclaimer:

Please be aware that this information is based on general trends in babies, and it is not medical advice. Your doctor should be your first source of information and advice when considering any changes to your child’s formula and when choosing your child’s formula. Always consult your pediatrician before making any decisions about your child’s diet or if you notice any changes in your child.

Breastfeeding is the best nutrition for your baby because breast milk provides your child with all the essential nutrients they need for growth and development. Please consult your pediatrician if your child requires supplemental feeding.



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