It’s not clear how many people become infected with Chlamydia pneumoniae. However, many people who do get it are able to clear a mild infection on their own. Older people and some other groups are at a higher risk for more severe infections.
Read on for more information on the causes, symptoms, diagnosis, and treatment of Chlamydia pneumoniae.
Causes
Chlamydia pneumoniae can spread from one person to another through respiratory droplets. This typically occurs when a person who is infected sneezes or coughs.
People who have only brief contact with a person who has C. pneumoniae are unlikely to get sick. It’s more common that a person who is infected will transmit the bacterium to someone who lives with them or is around them for prolonged periods of time.
Symptoms
Many people who have a C. pneumoniae infection will have mild symptoms or no symptoms at all.
SchoolsResidential halls or housing at universities and collegesHospitalsLong-term care facilities, such as assisted living or nursing homesCorrectional facilitiesMilitary barracks
For those who experience symptoms, it may take three to four weeks for them to appear after being exposed to the bacterium. This is referred to as the incubation period.
Common symptoms include:
Fatigue Fever (low-grade) Headache Runny nose Nasal congestion (stuffy nose) Hoarse voice or loss of voice Throat soreness A cough that worsens over time
Diagnosis
If you suspect you’ve come into contact with the bacteria or are experiencing symptoms, a healthcare provider may take a sample from your throat or nose to test for bacterial antibodies. A blood test to confirm infection is also possible.
Treatment
Again, many people who have a Chlamydia pneumoniae infection will not need any specific treatment. The infection will often go away on its own.
If treatment is necessary, a healthcare provider can assess the infection and possibly prescribe antibiotics. Common antibiotics for adults include:
AzithromycinTetracyclineDoxycyclineFluoroquinolones
Some people may go through one round of antibiotic treatment, but their symptoms come back after they are done taking the prescribed medicine. If this is the case, a healthcare provider may recommend another course of treatment.
Complications
Whereas many people who become infected have mild symptoms or no symptoms at all, some people experience an infection that can require hospitalization. This type of bacteria may make asthma worse and cause swelling in the brain (encephalitis) or heart (myocarditis).
Some research suggests that C. pneumoniae can also cause persistent infection. While persistent infection has not been definitively demonstrated in humans, it is hypothesized to play a role in chronic inflammatory conditions, including asthma and reactive arthritis.
Prevention
Like many other bacterial pathogens, one of the best strategies to prevent infection is practicing good hygiene.
You can reduce the risk of passing bacteria to others by:
Coughing or sneezing into your elbow to stop the respiratory droplets from travelingProperly disposing of any used tissues after blowing your nose
Hand hygiene is also a key component of prevention, including:
Washing your hands frequently and adequately with soap and warm water for at least 20 seconds Using hand sanitizer containing at least 60% alcohol when you can’t wash your hands Not touching your eyes, nose, and mouth with unwashed hands
Note that healthcare providers won’t typically prescribe antibiotics as a preventive measure against C. pneumoniae. It’s also possible for it to recur.
Summary
Chlamydia pneumoniae is a species of Chlamydia that causes respiratory conditions, including pneumonia. It’s transmitted from one person to another in close and prolonged contact through respiratory droplets. Symptoms may take up to four weeks to appear and can include sneezing, coughing, fatigue, low-grade fever, runny or stuffy nose, headache, and throat soreness.
Many people have mild or no symptoms, but older people are at a higher risk for severe infection. A throat swab or blood test may be used to diagnose an infection. If treatment is necessary, a healthcare provider will often prescribe antibiotics. It’s possible for infection to recur after treatment.
Prevention measures typically include frequent handwashing and covering your coughs and sneezes to limit transmission to others.
A Word From Verywell
Though C. pneumoniae is typically transmitted through prolonged contact with a person who is infected, it’s wise to regularly practice hygiene strategies to reduce the risk of any respiratory infections. Frequent handwashing is a key component of preventing many types of illnesses. Other practices include eating a nutritious diet, getting enough quality rest, managing your stress, and being regularly active, which can all help maintain your immune system so you’re able to fight off infections.
