Cryptosporidium sp. and Cyclospora sp

  • Dickson D. Despommier
  • Robert W. Gwadz
  • Peter J. Hotez


The genera Cryptosporidium and Cyclospora constitute two groups of parasitic protozoans, all of which can cause transient diarrhea. Cryptosporidium occurs in a wide variety of hosts, such as sheep, cattle, birds, rodents, and primates including humans, whereas Cyclospora occurrence has so far been described only in humans.1 Experimental evidence based on cross-infectivity of Cryptosporidium recovered from different hosts suggests that the number of species of this organism is limited, with C. parvum being the dominant one in nature.2 It seems that many species of animals harboring Cryptosporidium act as reservoirs of the human infection. The organism is worldwide in distribution. It is considered a pathogen for all ages and both sexes in humans, in whom it causes subclinical infection or a mild diarrhea.


Watery Diarrhea Public Water Supply Congenital Toxoplasmosis Plasmodium Malariae Parasite Life Cycle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York, Inc. 1995

Authors and Affiliations

  • Dickson D. Despommier
    • 1
  • Robert W. Gwadz
    • 2
  • Peter J. Hotez
    • 3
  1. 1.College of Physicians and SurgeonsColumbia University, Presbyterian HospitalNew YorkUSA
  2. 2.Laboratory of Malaria Research, National Institute of Allergy and Infectious DiseasesNational Institutes of HealthBethesdaUSA
  3. 3.Yale University School of MedicineNew HavenUSA

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