Infectious agents

Articles

• 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 (...)

• 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 (...)

• Staphylococcus aureus
  5 February 2006

  Staphylococcus aureus organisms are pyogenic, nonmotile, Gram-positive cocci that form grapelike clusters. These bacteria cause a myriad of skin lesions (boils, carbuncles, impetigo, and scalded skin) and also cause osteomyelitis, pneumonia, endocarditis, food poisoning, and toxic shock syndrome (TSS).
  Staphylococcus aureus organisms are pyogenic, nonmotile, Gram-positive cocci that form grapelike clusters. These bacteria cause a myriad of skin lesions (boils, carbuncles, impetigo, and (...)

• Trichinella spiralis
  17 March 2009

  Digital slides
  UI:654 - Trichinosis
  UI:975 - Trichinosis
  Definition: Trichinella spiralis is a nematode parasite that is acquired by ingestion of larvae in undercooked meat from pigs that have themselves been infected by eating T. spiralis-infected rats or pork.
  In the United States, the number of T. spiralis-infected pigs has been greatly reduced by laws requiring cooking of hog food, and this has reduced the number of reported human infections in the United States to about 100 each (...)

• Adenovirus
  10 June 2003

  Pathology (adenoviral infections)
  adenoviral hepatobiliary infections adenoviral hepatitis adenoviral cholangitis adenoviral ascending cholangiohepatitis
  adenoviral enteritis
  adenoviral colitis
  adenoviral bronchitis
  adenoviral bronchiolitis
  adenoviral pneumonia
  adenoviral conjunctivitis
  adenoviral cystitis
  adenoviral myocarditis
  Detection
  immunochemistry (#7557939#)
  in situ hybridization (#7557939#)
  See also
  adenoviral inclusions
  References
  Ohori NP, Michaels (...)

• Mycobacterium sp.
  23 April 2004

  mycobacteria, mycobacterias

• Treponema pallidum
  10 October 2007

  See also
  Treponema sp.
  syphilis

• cytomegalovirus
  14 April 2004

  HCMV, CMV

• Epstein-Barr virus
  10 June 2003

  EBV

• Arenavirus
  2 January 2006

  Arenaviruses merit significant attention both as tractable model systems to study acute and persistent viral infections, and as clinically important human pathogens.
  Evidence indicates that LCMV remains present in the USA and Europe and capable of causing significant morbidity in infected individuals, likely being a neglected human pathogen.
  Moreover, new arenaviruses are being discovered in the Americas on the average of one every three years, with some of them causing severe hemorrhagic (...)

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