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{{Histoplasmosis}}
{{Histoplasmosis}}


{{CMG}}
{{CMG}}; {{AE}} {{AKI}}


==Overview==
==Overview==
Risk factors for [[histoplasmosis]] infection include living in or traveling to the Central or Eastern United States. Patients with [[immunosupression]], [[Hematological malignancy|hematological]] malignancies, [[immunosuppressive therapy]] and [[infants]] are at a higher risk of developing [[Disseminated disease|disseminated]] [[histoplasmosis]] infection.


==Risk Factors==
==Risk Factors==
 
'''Risk factors for pulmonary histoplasmosis include:'''
This "acute" infection does not last, but can leave a person with small scars (granulomas). These scars can be difficult to distinguish from tumors in the lung.
*Living in or traveling to the Central or Eastern United States.
However, the infection can cause severe illness right away, or redevelop years after the first exposure, if a person's immune system is weakened by:
*Activities such as spelunking, mining, construction, excavation, demolition, roofing, chimney cleaning, farming, gardening, and installing heating and air-conditioning systems.  
*[[Cancer]]
*Activities that expose people to areas where bats live and birds roost also increase risk. Exposure to soil or particles contaminated with droppings of chickens, bats, or blackbirds is the main mode of transmission.<ref name=cdc1>Chiller, TM. Chapter 3 Infectious Diseases Related to Travel. Histoplasmosis. Available at: http://wwwnc.cdc.gov/travel/yellowbook/2016/infectious-diseases-related-to-travel/histoplasmosis. Accessed February 2, 2016.</ref>
*[[Chemotherapy]]
'''Risk factors for severe acute disease or disseminated disease include:'''
*Immune-suppressing drugs
*[[Infant|Infants]]
*[[HIV]] infection
*[[Immunocompromised]] states
Risk factors for chronic pulmonary histoplasmosis include:
*[[AIDS]] Patients with [[CD4]] counts of less than 150 cells/mm³ are at highest risk<ref name="pmid26897068">{{cite journal| author=Wheat LJ, Azar MM, Bahr NC, Spec A, Relich RF, Hage C| title=Histoplasmosis. | journal=Infect Dis Clin North Am | year= 2016 | volume= 30 | issue= 1 | pages= 207-27 | pmid=26897068 | doi=10.1016/j.idc.2015.10.009 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26897068  }}</ref>
*Living in or traveling to central or eastern United States
*[[Hematological malignancy|Hematologic]] malignancies
*Exposure to soil or particles contaminated with droppings of chickens, bats, or blackbirds
*[[Organ transplant|Solid organ transplant]]<ref name="pmid28470019">{{cite journal| author=Natarajan M, Swierzbinski MJ, Maxwell S, Zelazny AM, Fahle GA, Quezado M et al.| title=Pulmonary Histoplasma Infection After Allogeneic Hematopoietic Stem Cell Transplantation: Case Report and Review of the Literature. | journal=Open Forum Infect Dis | year= 2017 | volume= 4 | issue= 2 | pages= ofx041 | pmid=28470019 | doi=10.1093/ofid/ofx041 | pmc=5407209 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=28470019  }} </ref>
*Pre-existing COPD
*[[Hematopoietic stem cell transplant]]
*Weakened immune system, such as in people who have AIDS
*Use of [[immunosuppressive agents]] such as [[corticosteroids]] and [[Tumour necrosis factor|tumor necrosis factor]] antagonists
*Congenital [[T-cell]] deficiencies
*[[Interferon-gamma|Gamma interferon]] receptor deficiency
*Hyperimmunoglobulin M syndrome is a risk factor for refractory and recurrent disseminated [[histoplasmosis]]


==References==
==References==
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[[Category:Fungal diseases]]
[[Category:Fungal diseases]]
[[Category:Rat carried diseases]]
[[Category:Rat carried diseases]]
[[Category:Emergency mdicine]]
[[Category:Disease]]
[[Category:Up-To-Date]]
[[Category:Infectious disease]]
[[Category:Pulmonology]]
[[Category:Gastroenterology]]

Latest revision as of 22:11, 29 July 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aravind Kuchkuntla, M.B.B.S[2]

Overview

Risk factors for histoplasmosis infection include living in or traveling to the Central or Eastern United States. Patients with immunosupression, hematological malignancies, immunosuppressive therapy and infants are at a higher risk of developing disseminated histoplasmosis infection.

Risk Factors

Risk factors for pulmonary histoplasmosis include:

  • Living in or traveling to the Central or Eastern United States.
  • Activities such as spelunking, mining, construction, excavation, demolition, roofing, chimney cleaning, farming, gardening, and installing heating and air-conditioning systems.
  • Activities that expose people to areas where bats live and birds roost also increase risk. Exposure to soil or particles contaminated with droppings of chickens, bats, or blackbirds is the main mode of transmission.[1]

Risk factors for severe acute disease or disseminated disease include:

References

  1. Chiller, TM. Chapter 3 Infectious Diseases Related to Travel. Histoplasmosis. Available at: http://wwwnc.cdc.gov/travel/yellowbook/2016/infectious-diseases-related-to-travel/histoplasmosis. Accessed February 2, 2016.
  2. Wheat LJ, Azar MM, Bahr NC, Spec A, Relich RF, Hage C (2016). "Histoplasmosis". Infect Dis Clin North Am. 30 (1): 207–27. doi:10.1016/j.idc.2015.10.009. PMID 26897068.
  3. Natarajan M, Swierzbinski MJ, Maxwell S, Zelazny AM, Fahle GA, Quezado M; et al. (2017). "Pulmonary Histoplasma Infection After Allogeneic Hematopoietic Stem Cell Transplantation: Case Report and Review of the Literature". Open Forum Infect Dis. 4 (2): ofx041. doi:10.1093/ofid/ofx041. PMC 5407209. PMID 28470019.