Pneumonia is a general term for lung infections that can be caused by a variety of germs (viruses, bacteria, fungi, and parasites). Most cases, though, are caused by viruses, including adenoviruses, rhinovirus, influenza virus (flu), respiratory syncytial virus (RSV), human metapneumovirus, and parainfluenza virus (which causes croup).
Often, pneumonia begins after an upper respiratory tract infection (an infection of the nose and throat), with symptoms starting after 2 or 3 days of a cold or sore throat. It then moves to the lungs. Fluid, white blood cells, and debris start to gather in the air spaces of the lungs and block the smooth passage of air, making it harder for the lungs to work well.
Symptoms vary depending on a child's age and what caused the pneumonia, but can include:
If the pneumonia is in the lower part of the lungs near the abdomen, a child might have a fever and abdominal pain or vomiting but no breathing problems.
Kids with pneumonia caused by bacteria usually become sick fairly quickly, starting with a sudden high fever and unusually fast breathing.
Kids with pneumonia caused by viruses probably will have symptoms that appear more gradually and are less severe, though wheezing can be more common.
Some symptoms give important clues about which germ is causing the pneumonia. For example, in older kids and teens, pneumonia due to Mycoplasma (also called walking pneumonia) is notorious for causing a sore throat, headache, and rash in addition to the usual symptoms of pneumonia.
In babies, pneumonia due to chlamydia may cause conjunctivitis (pinkeye) with only mild illness and no fever. When pneumonia is due to whooping cough (pertussis), a child may have long coughing spells, turn blue from lack of air, or make the classic "whoop" sound when trying to take a breath.
The length of time between exposure to the germ and when someone starts feeling sick varies, depending on which virus or bacteria is causing the pneumonia (for instance, 4 to 6 days for RSV, but just 18 to 72 hours for the flu).
With treatment, most types of bacterial pneumonia can be cured within 1 to 2 weeks, although walking pneumonia may take 4 to 6 weeks to go away completely. Viral pneumonia may last longer.
The viruses and bacteria that cause pneumonia are contagious. They're usually found in fluid from the mouth or nose of someone who's infected, so that person can spread the illness by coughing or sneezing. Sharing drinking glasses and eating utensils, and touching the used tissues or handkerchiefs of an infected person also can spread pneumonia.
Some types of pneumonia can be prevented by vaccines. Kids usually get routine immunizations against Haemophilus influenzae and whooping cough (pertussis) beginning at 2 months of age. Vaccines are now also given against the pneumococcus, a common cause of bacterial pneumonia.
Children with chronic illnesses can be at special risk for certain types of pneumonia, so they might need additional vaccines or protective immune medication. ("Chronic" means an ongoing illness or one that goes away and keeps coming back.) The flu vaccine is recommended for all healthy kids ages 6 months through 19 years, but especially for kids with chronic illnesses such as heart or lung disorders or asthma.
Because they're at higher risk for serious complications, babies born prematurely may get treatments that temporarily protect against RSV because it can lead to pneumonia in younger kids.
Doctors may give antibiotics to prevent pneumonia in kids who have been exposed to someone with certain types of pneumonia, such as pertussis. Those with HIV infection might be given antibiotics to prevent pneumonia caused by Pneumocystis jirovecii.
Antiviral medicine is now available, too, and can be used to prevent some types of viral pneumonia or to make symptoms less severe.
In general, pneumonia is not contagious, but the upper respiratory viruses and bacteria that lead to it are. So it's best to keep kids away from anyone with symptoms (stuffy or runny nose, sore throat, cough, etc.) of a respiratory infection.
If someone in your home has a respiratory infection or throat infection, keep his or her drinking glasses and eating utensils separate from those of other family members, and wash your hands often, especially if you are handling used tissues or dirty handkerchiefs.
Call your doctor immediately if your child has any of the signs and symptoms of pneumonia, but especially if he or she:
Doctors usually make a pneumonia diagnosis after a physical examination. They'll check a child's appearance, breathing pattern, and vital signs, and listen to the lungs for abnormal sounds. They might order a chest X-ray, blood tests, and (sometimes) bacterial cultures of mucus produced by coughing.
In most cases, pneumonia is treated with antibiotics taken by mouth at home. The type of antibiotic used depends on the type of pneumonia. In some cases, other members of the household might be treated with medication to prevent illness.
Children might be treated in a hospital if the pneumonia is caused by whooping cough, if another kind of bacterial pneumonia is causing a high fever and breathing problems, or if they:
Hospital treatment can include intravenous (IV) antibiotics (given through a needle into a vein) and respiratory therapy (breathing treatments). More severe cases might be treated in the intensive care unit (ICU).
Anyone with pneumonia needs to get plenty of rest and drink lots of fluids while the body works to fight the infection.
If your child has bacterial pneumonia and the doctor has prescribed antibiotics, give the medicine on schedule for as long as directed. This will help your child recover faster and help prevent the infection from spreading to other household members. For wheezing, the doctor might recommend using a nebulizer or an inhaler.
Ask the doctor before you use a medicine to treat your child's cough because cough suppressants stop the lungs from clearing mucus, which isn't helpful in some types of pneumonia. Over-the-counter cough and cold medications are not recommended for any kids under 6 years old.
Take your child's temperature at least once each morning and each evening, and call the doctor if it goes above 102ºF (38.9ºC) in an older infant or child, or above 100.4ºF (38ºC) in a baby under 6 months of age.
Check your child's lips and fingernails to make sure they are rosy and pink. Call your doctor if they are bluish or gray, which is a sign that the lungs are not getting enough oxygen.
Reviewed by: Rupal Christine Gupta, MD
Date reviewed: August 2014
|Centers for Disease Control and Prevention (CDC) The CDC (the national public health institute of the United States) promotes health and quality of life by preventing and controlling disease, injury, and disability.|
|American Lung Association The mission of this group is to prevent lung disease and promote lung health. Contact the group at: American Lung Association|
61 Broadway, 6th Floor
NY, NY 10006
|Immunization Action Coalition This organization is a source of childhood, adolescent, and adult immunization information as well as hepatitis B educational materials.|
|CDC: Preteen and Teen Vaccines CDC site provides materials in English and Spanish for parents, teens, preteens, and health care providers about vaccines and the diseases they prevent.|
|CDC: Flu (Influenza) The CDC's site has up-to-date information on flu outbreaks, immunizations, symptoms, prevention, and more.|
|Word! Pneumonia Pneumonia is an infection of the lungs, usually caused by viruses or bacteria.|
|Croup Croup is characterized by a loud cough that resembles the barking of a seal and difficulty breathing. Most cases of croup are caused by viruses, are mild, and can be treated at home.|
|Bronchitis Bronchitis is an inflammation of the lining of the bronchial tubes. When a person has bronchitis, it may be harder for air to pass in and out of the lungs.|
|Lungs and Respiratory System By the time we're 70 years old, we will have taken at least 600 million breaths. All of this breathing couldn't happen without the respiratory system.|
|Hib Disease (Haemophilus Influenzae Type b) Hib is pretty rare in U.S. teens because most get vaccinated as babies. But for people who do get Hib, it can sometimes be serious. Here's more information about this bacterial infection and how it might show up.|
|Fever and Taking Your Child's Temperature Although it can be frightening when your child's temperature rises, fever itself causes no harm and can actually be a good thing - it's often the body's way of fighting infections.|
|A to Z: Pneumonia, Viral Learn about viral pneumonia, a lung infection caused by a virus.|
|Bronchopulmonary Dysplasia (BPD) Babies who are born prematurely or who experience respiratory problems shortly after birth are at risk for bronchopulmonary dysplasia (BPD), sometimes called chronic lung disease.|
|Lungs and Respiratory System Each day you breathe about 20,000 times. Find out more about the lungs and breathing process.|
|Walking Pneumonia Many kids with this milder version of pneumonia feel well enough to go to school. But it's important to keep kids home until after treatment kicks in and symptoms improve.|
|Whooping Cough (Pertussis) Pertussis is characterized by severe coughing spells that end in a whooping sound when the person breathes in. It can be prevented with the pertussis vaccine, part of the DTaP immunization.|
|The Flu: When to Get Help Most teens recover from the flu after a few days. But how do you know when the flu can make you seriously ill? This article for teens explains when to get medical help.|
|Influenza (Flu) Flu symptoms tend to develop quickly and are usually more severe than the typical sneezing and stuffiness of a cold. Yearly vaccination is the best protection against the flu.|
|Hib Disease (Haemophilus Influenzae Type b) Hib disease can cause serious illnesses like meningitis and pneumonia. To protect kids from this bacterial infection, they should receive the Hib vaccine as infants.|
|Pneumonia Pneumonia is a common lung infection that can usually be treated without a hospital stay.|
|Pneumonia Pneumonia is an infection in a person's lungs. Find out more in this article for kids.|
|Coughing Coughs are a common symptom, but most aren't a sign of a serious condition. Learn about different coughs, how to help your child feel better, and when to call your doctor.|
|Respiratory Syncytial Virus Respiratory syncytial virus (RSV) is a major cause of respiratory illness in young children. Learn how to recognize the signs and symptoms of this contagious infection.|
|Strep Throat Strep throat is a common cause of sore throat in kids and teens. It usually requires treatment with antibiotics, but improves in a few days.|
|Your Child's Immunizations: Hib Vaccine Find out when and why your child needs to get this vaccine.|
|A to Z: Pneumonia, Bacterial Bacterial pneumonia is a lung infection caused by bacteria (such as staph or strep).|
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