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 (...)

• Rhizopus sp.
  18 January 2007

  See also
  Mucor sp.

• 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 (...)

• 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. (...)

• Echinococcus granulosus
  7 December 2005

  Definition: Echinococcus granulosus, also called the Hydatid worm, is a cyclophyllid cestode that parasitizes the small intestine of canids as an adult, but which has important intermediate hosts such as livestock and humans, where it causes hydatid disease.
  Images
  hepatic cystic echinococcosis / Echinococcus granulosus
  https://twitter.com/RhondaYantiss/status/851519941299851265
  The adult tapeworm is about 5 mm long and has three proglottids ("segments") when intact. Like all (...)

• Rhizomucor sp.
  30 August 2007

  Examples
  Rhizomucor miehei
  Rhizopus oryzae (#16882613#)
  Rhizomucor pusillus (#16272531#)
  Pathology
  Rhizomycosis infections (rhizomycoses)
  See also
  zygomycoses (mucormycoses)
  References
  McGuire FR, Grinnan DC, Robbins M. Mucormycosis of the bronchial anastomosis: a case of successful medical treatment and historic review. J Heart Lung Transplant. 2007 Aug;26(8):857-61. PMID: #17692792#
  Yu J, Li RY. Primary renal zygomycosis due to Rhizopus oryzae. Med Mycol. 2006 (...)

• Actinomyces sp.
  29 January 2007

  Images
  tubal actinomycosis https://twitter.com/solcosao/status/715295386072559617
  Pathology
  actinomycoses (actinomycosis) pulmonary actinomycosis tubal actinomycosis
  See also
  bacterial infections
  References
  In situ hybridization for the differentiation of Actinomyces and Nocardia in tissue sections. Isotalo PA, Qian X, Hayden RT, Roberts GD, Lloyd RV. Diagn Mol Pathol. 2009 Sep;18(3):183-8. PMID: (...)

• Staphylococcus saprophyticus
  5 February 2006

  Staphylococcus saprophyticus is a common cause of urinary tract infections in young women.
  See also
  bacterias Staphylococcus sp.

• Calymmatobacterium granulomatis
  10 October 2007

  Klebsiella granulomatis

• Crimean-Congo hemorrhagic fever virus
  2 January 2006

  CCHFV

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