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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Unusual infection
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Accession:HP:0032101 term browser browse the term
Definition:A type of infection that is regarded as a sign of a pathological susceptibility to infection. There are five general subtypes. (i) Opportunistic infection, meaning infection by a pathogen that is not normally able to cause infection in a healthy host (e.g., pneumonia by Pneumocystis jirovecii or CMV); (ii) Unusual location (focus) of an infection (e.g., an aspergillus brain abscess); (iii) a protracted course or lack of adequate response to treatment (e.g., chronic rhinosinusitis); (iv) Unusual severity or intensity of an infection; and (v) unusual recurrence of infections.

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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the immune system 0
        Abnormality of immune system physiology 0
          Unusual infection 0
            Chronic infection + 0
            Infection following live vaccination + 0
            Opportunistic infection + 0
            Recurrent infections + 0
            Severe infection + 0
            Unusual fungal infection + 0
            Unusual helminthic infection 0
            Unusual infection by anatomical site + 0
            Unusual parasitic infection + 0
            Unusual protozoan infection + 0
            Unusual viral infection + 0
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