It happens when your immune system isn’t able to prevent these organisms from multiplying in your lungs.

Pneumonia can also occur when you aspirate (inhale) a foreign object.

Bacteria

Bacterialpneumoniais the most common jot down of pneumonia.

pneumonia causes

© Verywell, 2018

It often only affects one area of your lung.Bacterial pneumonia is usually treated with antibiotics.

Pneumococcal pneumonia is the most common throw in of bacterial pneumonia.

It is sparked by theStreptococcus pneumoniaebacteria.

In the United States, around 900,000 people a year are infected with this bacterium.

Atypical Bacteria

Atypical bacteria are bacteria that are unable to be cultured with standard methods.

Atypical bacteria that cause pneumonia include:

What types of pneumonia are contagious?

Fungal and aspiration pneumonia are not transmitted from person to person.

Usually, people recover from other types of pneumonia without lasting lung problems.

Fungi

Fungal pneumonia is caused when spores put in your lungs and multiply.

With viral pneumonia, you are contagious until your symptoms start to resolve.

As the object begins to decompose, bacteria proliferate, leading to an infection.

This problem is more common in the elderly, who are more likely to have problems with swallowing.

What is the survival rate for pneumonia?

Most people who get pneumonia recover without serious complications.

Risk factors for pneumonia include age under 2 or over 65.

It is also possible to get pneumonia while you are in the hospital.

People with chronic diseases, a suppressed immune system, and difficulty swallowing are also at risk.

Certain lifestyle choices like smoking and alcohol use can also put you at greater risk.

2016;17(12) doi:10.3390/ijms17122120

American Lung Association.What causes pneumonia?

Bajantri B, Venkatram S, Diaz-fuentes G.A potentially severe infection.J Clin Med Res.

2018;15(8).

2022;8(12):e12620.

Myall KJ, Mukherjee B, Castanheira AM, et al.Persistent postcovid-19 interstitial lung disease.

An observational study of corticosteroid treatment.Annals ATS.

2021;18(5):799-806. doi:10.1513/annalsats.202008-1002oc

Centers for Disease Control and Prevention.Pneumocystis pneumonia | Fungal diseases.

iaz JH.Environmental and wilderness-related risk factors for histoplasmosis: More than bats in caves.Wilderness Environ Med.

2018;29(4):531-540. doi:10.1016/j.wem.2018.06.008.

Longo DL.Aspiration pneumonia.N Engl J Med.

2016;44(1):57-67. doi:10.1111/apt.13652

National Heart Lung and Blood Institute.Pneumonia.

2015;10(10):e0140060.

doi:10.1371/journal.pone.0140060

American Lung Association.Pneumonia treatment and recovery.

2019;14(7):e0220204.

2024;24(1):1661. doi:10.1186/s12889-024-18760-y

World Health Organization.Children: Reducing mortality.

2022;(167):1-9.

Marrie TJ.Epidemiology, pathogenesis, and microbiology of community-acquired pneumonia in adults.

National Heart, Lung, and Blood Institute.Pneumonia.