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An opportunistic infection is an infection caused by pathogens (bacteria, fungi, parasites or viruses) that take advantage of an opportunity not normally available.These opportunities can stem from a variety of sources, such as a weakened immune system (as can occur in acquired immunodeficiency syndrome or when being treated with immunosuppressive drugs, as in cancer treatment), [1] an altered ...
Microsporidiosis is an opportunistic intestinal infection that causes diarrhea and wasting in ... Although it is classified as a protozoal disease in ICD-10, ...
Cryptococcosis is a common opportunistic infection for AIDS and is particularly common among people living with AIDS in Africa. Other conditions that pose an increased risk include certain malignancies (such as lymphoma), liver cirrhosis, organ transplants, and long-term corticosteroid therapy. [18] Distribution is worldwide in soil. [19]
Fusariosis is an infection seen in people with low neutrophils, a type of white blood cell that fights infection. It is a significant opportunistic pathogen in people with blood cancer. [2]: 330 It is associated with infections with Fusarium species, such as Fusarium proliferatum. [3] It is fatal in more than half of cases. [1]
There may be no symptoms, [4] or talaromycosis may present with small painless skin lesions. [2] The head and neck are most often affected. [2] Other features include: fever, general discomfort, weight loss, cough, difficulty breathing, diarrhoea, abdominal pain, swelling of the spleen (splenomegaly), liver swelling (hepatomegaly), swollen lymph nodes (lymphadenopathy), [2] and anemia.
Generally, diseases outlined within the ICD-10 codes A00-B99 within Chapter I: Certain infectious and parasitic diseases should be included in this category. Infectious diseases are diseases caused by biological agents, which can be transmitted to others, rather than by genetic, physical or chemical agents.
C. koseri may act as an opportunistic pathogen in individuals who are immunocompromised. [3] It rarely is community-acquired and mainly occurs as hospital-acquired infections. Infections caused by C. koseri can lead to various symptoms, including fever, chills, diarrhea, and abdominal pain.
Esophageal candidiasis is an opportunistic infection of the esophagus by Candida albicans. The disease usually occurs in patients in immunocompromised states, including post-chemotherapy and in AIDS. However, it can also occur in patients with no predisposing risk factors, and is more likely to be asymptomatic in those patients. [1]