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Pneumonia is an inflammatory condition of the lung primarily affecting the small air sacs known as alveoli. [3] [14] Symptoms typically include some combination of productive or dry cough, chest pain, fever, and difficulty breathing. [15]
While pneumonia involves the lungs specifically, other organ systems can be affected, Dr. Clayton Cowl, a pulmonologist with the Mayo Clinic in Rochester, Minn., recently told Fortune.
Pneumococcal pneumonia is a type of bacterial pneumonia that is caused by Streptococcus pneumoniae (pneumococcus). [1] It is the most common bacterial pneumonia found in adults, the most common type of community-acquired pneumonia, and one of the common types of pneumococcal infection. The estimated number of Americans with pneumococcal ...
Pneumonia may inflame the air sacs in one or both of your lungs, notes the Mayo Clinic. The sacs can fill with pus or fluid, causing phlegmy coughs. Organisms including fungi, parasites, viruses ...
In some cases, chest CT can reveal pneumonia not seen on x-rays. However, congestive heart failure or other types of lung damage can mimic CAP on x-ray. [15] When signs of pneumonia are discovered during evaluation, chest X-rays and examination of the blood and sputum for infectious microorganisms may be done to support a diagnosis of CAP.
Pneumonia can be caused by a buildup of bacteria, viruses, or fungi in the lungs. There are several types of bacteria that can cause pneumonia, some typical and some atypical.
Permanent damage to the upper respiratory tract, distal airways, and lung parenchyma occurs only if escape from the gas source is impeded. Less soluble gases (e.g. nitrogen dioxide, phosgene, ozone) may not dissolve until they are well into the respiratory tract, often reaching the lower airways. [25]
Walking pneumonia, a lung infection caused by the bacterium Mycoplasma pneumoniae, tends to be most common among older children and adolescents but in 2024 has been rampant among young children.
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