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Pneumonia Learning Center
Causes could include:
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Streptococcus pneumoniae
- Respiratory syncyti...
- Mycoplasma pneumoni...
- Herpes Simplex Virus
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Adenoviruses
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Varicella-zoster virus infection
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Pneumonia is a common illness that affects millions of people each year in the United States. Germs called bacteria, viruses, and fungi may cause pneumonia.
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The list of organisms which can cause pneumonia is very large, and includes nearly every class of infecting organism: viruses, bacteria, bacteria-like organisms, fungi, and parasites (including certain worms). Different organisms are more frequent...
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Serious side effects in cancer patients most often occur in the lungs and may indicate that the cancer is progressing or that the patient has developed a new problem. Both cancer and the therapies used to treat it can injure the lungs or weaken th...
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The list of organisms that can cause pneumonia is lengthy and includes nearly every class of infecting organism: viruses, bacteria, bacteria-like organisms, fungi, and parasites (including certain worms). Different organisms are more frequently en...
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Chlamydia trachomatis is a major cause of sexually transmitted diseases (called nongonococcal urethritis and pelvic inflammatory disease ). When a woman with an active chlamydial infection gives birth to a baby, the baby may aspirate (suck into hi...
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Pneumonia can have more than 30 different causes, but the five main causes are: bacteria viruses mycoplasmas other infectious pathogens, like fungi (including Pneumocystis ) some chemicals Common symptoms of pneumonia vary according to its cause, ...
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Symptoms of bacterial pneumonia include a cough , sputum (mucus) production that may be puslike or bloody, shaking and chills, fever , and chest pain . Symptoms often have an abrupt beginning and occur after an upper respiratory infection such as ...
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P. carinii is an opportunistic organism. This means that it causes disease only under certain conditions, as when a person is immunocompromised. Under these circumstances, P. carinii can multiply and cause pneumonia. The mechanisms of the organism...
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The list of organisms that can cause pneumonia is very large, and includes nearly every class of infectious organism: viruses, bacteria, bacteria-like organisms, fungi, and parasites (including certain worms ). Different organisms are more frequen...
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Pneumonia with eosinophils occurs as part of a hypersensitivity reaction. A hypersensitivity reaction is an over-reaction of the immune system to a particular stimulus. As part of the hypersensitive reaction, cells of the immune system are produce...
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Introduction Pneumonia has been recognized as a disease entity since remote times, with definitions of the condition traceable in ancient Greek, Roman, and Arabic writings. Definitive recognition of the etiologic role of microorganisms in pneumonia, and the identification of Streptococcus pneumoniae as the most common causative agent was only achieved roughly 120 years ago.
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The most common mechanism by which the lung is inoculated with pathogenic organisms is through microaspiration of oropharyngeal contents, a process that occurs in otherwise healthy individuals during sleep ( Chapter 82 ). Colonization of the oral pharynx with pathogenic organisms, such as Streptococcus pneumoniae ( Chapter 303 ), can thereby lead to delivery of sufficient quantities of organisms to infect the lung.
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The following Clinical Topic Tour provides an overview of pneumococcal pneumonia and was adapted by materials published by the National Institute of Allergy and Infectious Diseases and the CDC.
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The actual incidence of pneumonia in ambulatory patients is difficult to estimate because the etiologic agent is rarely identified except in clinical trials, and CAP is not currently considered a reportable disease. Each year in the United States there are 2 to 3 million cases of CAP.
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Respiratory syncytial virus (RSV) is a very common virus that leads to mild, cold-like symptoms in adults and older healthy children. It can be more serious in young babies, especially to those in certain high-risk groups.
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Respiratory syncytial virus (RSV) is a virus that can cause severe lower respiratory infections in children under the age of two, and milder upper respiratory infections in older children and adults. RSV infection is also called bronchiolitis, bec...
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Respiratory syncytial virus (RSV) is a virus that can cause severe lower respiratory infections in children younger than two years of age and milder upper respiratory infections in older children and adults. RSV infection in young children is also...
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Mycoplasma pneumonia is an infection of the lungs caused by by the bacteria Mycoplasma pneumoniae (M. pneumoniae. See also: Atypical pneumonia; Viral pneumonia.
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Herpes simplex is a viral infection that mainly affects the mouth or genital area.
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Virus that causes blister-like open sores, usually on the mouth or genitals of the infected person. Herpes simplex virus (HSV) exists in two known forms. HSV type 1 causes sores to erupt near the mouth; HSV type two causes sores to erupt on the ge...
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Herpes simples virus (HSV, or herpesvirus) is a virus that causes infection of skin and mucous membrane and rarely infects other parts of the body. However, in the immunosuppressed patient, HSV may cause pneumonia and other more severe infections....
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Herpes is an infection caused by a herpes simplex virus 1 or 2, and it primarily affects the mouth or genital area.
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Varicella, or chickenpox, is an acute communicable disease characterized by a generalized vesicular rash. Because it is highly contagious, most individuals contract it in childhood.
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Varicella-zoster virus is the causal agent of varicella (chickenpox) and herpes zoster (shingles). Varicella, the primary varicella-zoster virus infection, is predominantly a childhood disease in non-vaccinated populations.
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