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The history of cryptosporidiosis

Dietmar Steverding1

  • 1Bob Champion Research and Education Building, Norwich Medical School, University of East Anglia, Norwich Research Park, Rosalind Franklin Road, Norwich, NR4 7UQ, UK. d.steverding@uea.ac.uk.

Parasites & Vectors
|July 18, 2026
PubMed

Insights

This review traces the history of cryptosporidiosis, a diarrheal disease caused by Cryptosporidium parasites. It highlights the parasite

Area of Science:

  • Parasitology
  • Evolutionary Biology
  • Public Health

Background:

  • Cryptosporidium parasites, apicomplexans, co-evolved with vertebrates since the Cambrian period.
  • Human and bovine cryptosporidiosis are primarily caused by C. parvum and C. hominis.
  • Palaeoparasitological evidence shows ancient human infections.

Purpose of the Study:

  • To provide a historical overview of cryptosporidiosis.
  • To detail the evolution and recognition of Cryptosporidium as a pathogen.
  • To emphasize its current impact on public health and agriculture.

Main Methods:

  • Historical review of scientific literature.
  • Analysis of palaeoparasitological data.
  • Examination of historical public health records and media reports.

Main Results:

  • The first Cryptosporidium species was identified in 1907.
  • Recognition as a significant human and bovine gastrointestinal pathogen occurred in the 1980s.
  • Waterborne outbreaks increased public awareness.

Conclusions:

  • Cryptosporidiosis is a major global cause of diarrheal disease.
  • It poses severe risks to vulnerable populations (children, immunocompromised individuals).
  • The disease has significant economic impacts on cattle farming.
Keywords:
C. hominisC. parvumCryptosporidium spp.CryptosporidiosisOutbreaks

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