Infectious agents

Articles

• Aspergillus sp.
  9 June 2004

  Aspergillus is common and widespread in nature and are most often found when crops are exposed to a high humidity environment over a long period of time or are damaged in stressful conditions such as drought, a condition which lowers the barrier to entry.
  The native habitat of Aspergillus is in soil, decaying vegetation, hay, and grains undergoing microbiological deterioration and it invades all types of organic substrates whenever and wherever the conditions are favorable for its growth. (...)

• Cryptococcus neoformans
  29 August 2005

  Torula histolytica
  Definition: Cryptococcus neoformans (formerly known as Torula histolytica) is an encapsulated yeast-like fungus found in dried avian (particularly pigeon) and bat excreta, and in dust contaminated with such droppings.
  Images
  Cryptococcus disseminated to lung, spleen, kidney, thyroid.
  https://twitter.com/JMGardnerMD/status/866107567046610945
  granuloma with Cryptococcus neoformans
  https://twitter.com/smlungpathguy/status/877392725959749632
  Digital cases
  HPC:62 (...)

• Candida sp.
  4 May 2004

  Adj. candidal

• myxovirus
  11 June 2003
• Salmonella
  29 November 2003

  References
  Lilic M, Stebbins CE. Re-structuring the host cell: up close with Salmonella’s molecular machinery. Microbes Infect. 2004 Nov;6(13):1205-11. PMID: #15488740#
  Jarvelainen HA, Galmiche A, Zychlinsky A. Caspase-1 activation by Salmonella. Trends Cell Biol. 2003 Apr ;13(4):204-9. PMID : #12667758#
  Mastroeni P. Immunity to systemic Salmonella infections. Curr Mol Med. 2002 Jun;2(4):393-406. PMID: #12108950#
  Hayward RD, Koronakiss V. Direct modulation of the host cell (...)

• Onchocerca volvulus
  9 December 2004

  Digital slides
  UI:990 - Onchocerca volvulus
  Definition: Onchocerca volvulus is a filarial nematode transmitted by black flies. It affects more than 17 million people in Africa, South America, and Yemen.
  An aggressive campaign of ivermectin treatment has dramatically reduced the incidence of Onchocerca infection in West Africa; however, O. volvulus remains the second most common preventable cause of blindness in sub-Saharan Africa.
  Adult O. volvulus parasites mate in the dermis, where (...)

• Mycobacterium avium intracellulare
  20 July 2007

  Mycobacterium Avium-Intracellulare Complex
  Definition: Mycobacterium avium (which includes three subspecies) and Mycobacterium intracellulare are separate species, but the infections they cause are so similar that they are simply referred to as Mycobacterium avium-intracellulare complex, or MAC.
  Images
  hepatic MAI infection
  https://twitter.com/GIPathologyURMC/status/765234005474181120
  Mycobacterium avium complex enteritis
  https://twitter.com/ARP_Press/status/852288984034287617 (...)

• parvovirus B19
  13 July 2004

  Adj. parvoviral

• Aspergillus fumigatus
  3 March 2006

  See also
  Aspergillus sp. Aspergillus niger
  References
  Wasylnka JA, Hissen AH, Wan AN, Moore MM. Intracellular and extracellular growth of Aspergillus fumigatus. Med Mycol. 2005 May;43 Suppl 1:S27-30. PMID: #16110789#

• cytomegalovirus
  14 April 2004

  HCMV, CMV

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