Infectious agents

Articles

• 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 (...)

• 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 sp.
  23 April 2004

  mycobacteria, mycobacterias

• Rhizopus sp.
  18 January 2007

  See also
  Mucor sp.

• 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 (...)

• Epstein-Barr virus
  10 June 2003

  EBV

• Rhinosporidium seeberi
  29 December 2003

  Images
  Rhinosporidiosis, sporangia with spores https://twitter.com/JMGardnerMD/status/663446531249414144 https://twitter.com/safia_nabhani/status/766277724340154368 https://twitter.com/GeronimoJrLapac/status/841616749015502849 https://twitter.com/RoshanNasim/status/876841889541926913
  Pathology
  rhinosporidiosis
  nasal rhinosporidiosis
  ocular cunjunctivitis (cunjunctival rhinosporidiosis)(#7403922#)
  Differential diagnosis
  Coccidioides (...)

• Helicobacter pylori
  6 October 2003

  WP
  Images
  Coccoid form of Helicobacter Pylori https://twitter.com/huda_rr1/status/846381455550795776
  HO in unusal places https://twitter.com/UTSW_GIpath/status/893183787424731138
  Digital cases
  HPC:311 : Follicular gastritis and active chronic gastritis, non-atrophical, Helicobacter pylori-associated.
  Links
  http://tolweb.org/treehouses/?treehouse_id=4722
  Definition
  Helicobacter pylori is a species of epsilon proteobacteria which colonizes the harsh environment of the human (...)

• Mycobacterium tuberculosis
  20 January 2012

  See also
  tuberculosis
  Mycobacterium sp.

• 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. (...)

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