Pneumonia is an infection of one or both lungs caused by bacteria, viruses, or fungi. It’s a serious infection in which the air sacs fill with pus and other liquid.
Anyone can get it. But those at highest risk include children younger than age 5, adults 50 and older, people who smoke, and people with certain health conditions.
Most people with pneumonia recover with treatment. But pneumonia can be very serious – even deadly. That’s why it’s important to prevent pneumonia.
Who needs a pneumonia vaccine?
The Centers for Disease Control and Prevention recommends pneumococcal vaccination for certain groups of people:
- Children younger than 5 years
- Adults 50 years or older
- Children and adults at higher risk for pneumococcal disease because of other health conditions
Need your vaccinations? Find a Sanford location
What causes pneumonia?
There are more than 30 different causes of pneumonia, and they’re grouped by the cause. The main types of pneumonia are:
- Bacterial pneumonia. This type is caused by various bacteria. The most common is Streptococcus pneumoniae. It often occurs when the body is weakened in some way. This may be from illness, poor nutrition, older age, or impaired immunity. Then the bacteria can work their way into the lungs. Bacterial pneumonia can affect all ages. But you are at greater risk if you abuse alcohol, smoke, are weak, have just had surgery, have a respiratory disease or viral infection, or have a weak immune system.
- Viral pneumonia. This type is caused by different viruses, including the flu. It’s responsible for about one-third of all pneumonia cases. SARS-CoV-2, the virus responsible for COVID-19, can also cause viral pneumonia. You may be more likely to get bacterial pneumonia if you have viral pneumonia.
- Mycoplasma pneumonia, also known as walking pneumonia. This type has somewhat different symptoms and physical signs. It’s caused by the bacteria Mycoplasma pneumoniae. It’s called an atypical or walking pneumonia because it generally causes a mild illness that resembles a cold and usually does not require bed rest or a hospital stay.
- Other pneumonias. There are other less common pneumonias that may be caused by other infections including fungi.
Who is at risk for pneumonia?
Anyone can get pneumonia. But the following groups are at the highest risk:
- Children younger than 5 years
- Adults 50 years and older
- People with certain health conditions
- People who smoke or use vaping devices
What are the symptoms of pneumonia?
The symptoms of bacterial pneumonia may include:
- Cough that makes green, yellow, or bloody mucus
- Fever
- Heavy sweating
- Loss of appetite
- Low energy and extreme tiredness (fatigue)
- Rapid breathing
- Rapid pulse
- Shaking chills
- Sharp or stabbing chest pain that’s worse with deep breathing or coughing
- Shortness of breath that gets worse with activity
- Bluish or grayish color to lips, fingernails or palms of hands
- Confused mental state or delirium, especially in older people
Early symptoms of viral pneumonia are the same as those of bacterial pneumonia, which may be followed by:
- Headache
- Increasing shortness of breath
- Muscle pain
- Weakness
- Cough that gets worse
Mycoplasma (walking) pneumonia has somewhat different symptoms. These include a severe cough that may make mucus.
How is pneumonia diagnosed?
Diagnosis is often made based on your recent health history such as surgery, a cold, or travel exposures. Your health care provider will also note the extent of the illness. Based on these factors, your provider may diagnose pneumonia simply on a thorough history and physical exam.
These tests may be used to confirm the diagnosis:
- Chest X-ray. This test takes pictures of internal tissues, bones, and organs, including the lungs.
- Blood tests. This test may be used to see if infection is present and if infection has spread to the bloodstream (blood cultures). Arterial blood gas testing checks the amount of oxygen in your bloodstream.
- Sputum (mucus) culture. This test is done on the material that is coughed up from the lungs and into the mouth. It’s often used to see if there’s an infection in the lungs.
- Pulse oximetry. An oximeter is a small machine that measures the amount of oxygen in the blood. A small sensor is taped or clipped onto a finger. When the machine is on, a small red light can be seen in the sensor. The test is painless and the red light does not get hot.
- Chest CT scan. This imaging procedure uses a combination of X-rays and computer technology to make sharp, detailed horizontal, or axial, images (often called slices) of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than regular X-rays.
- Bronchoscopy. This is direct exam of the main airways of the lungs (bronchi) using a flexible tube (bronchoscope). It helps to check and diagnose lung problems, assess blockages, and take out samples of tissue or fluid for testing,
- Pleural fluid culture. In this test, a fluid sample is taken from the pleural space. This is the space between the lungs and chest wall. A long, thin needle is put through the skin between the ribs and into the pleural space. Fluid is pulled into a syringe attached to the needle. It’s sent to the lab where it’s tested to find out what is causing the pneumonia.
How is pneumonia treated?
Treatment depends on the type of pneumonia you have. Most of the time, pneumonia is treated at home. But severe cases may be treated in the hospital.
Antibiotics are used for bacterial pneumonia. Antibiotics may also speed recovery from mycoplasma pneumonia and some special cases. Most viral pneumonias don’t have specific treatment. They often get better on their own.
Other treatment may include eating well, increasing fluid intake, getting rest, oxygen therapy, pain medicine, fever control, and maybe cough-relief medicine if cough is severe. If you smoke or use vaping devices, talk to your health care provider about ways to stop.
What are possible complications of pneumonia?
You are more likely to have complications if you are an older adult, a very young child, have a weak immune system, or have a serious health problem, such as diabetes or cirrhosis. Complications may include:
- Acute respiratory distress syndrome. This is a severe form of respiratory failure.
- Lung abscesses. These are pockets of pus that form inside or around the lung. They may need to be drained with tubes or with surgery.
- Respiratory failure. This requires the use of a breathing machine or ventilator.
- Sepsis. This is when the infection gets into the blood. It may lead to organ failure.
How can pneumonia be prevented?
One of the best ways to protect yourself from pneumonia is vaccination – not only against pneumonia, but also against other illnesses that can lead to pneumonia.
Pneumococcal vaccines can protect you from a common form of bacterial pneumonia.
Additionally, the flu is a common cause of pneumonia. So getting a flu shot every year can help prevent both the flu and pneumonia.
You also can reduce the risk of getting COVID-19 pneumonia by staying up to date with your COVID-19 vaccines.
You can receive vaccinations at your primary care clinic or by scheduling an appointment through My Sanford Chart.
Learn more
- Vaccines are for adults, too
- Podcast: Vaccinations help older adults stay stronger for longer
- What you need to know about the flu and the flu vaccine
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Posted In Family Medicine, Healthy Living, Immunizations, Internal Medicine, Senior Services
