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Cryptosporidium Dose Response Studies: Variation Between Isolates
Author(s) -
Teunis Peter F. M.,
Chappell Cynthia L.,
Okhuysen Pablo C.
Publication year - 2002
Publication title -
risk analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.972
H-Index - 130
eISSN - 1539-6924
pISSN - 0272-4332
DOI - 10.1111/0272-4332.00014
Subject(s) - infectivity , cryptosporidium parvum , cryptosporidium , biology , parasite hosting , microbiology and biotechnology , virology , feces , virus , world wide web , computer science
The infectivity of three different isolates of the waterborne protozoan parasite Cryptosporidium parvum has been tested in human feeding studies. These three isolates (Iowa, TAMU, and UCP) have different ID 50 s, indicating substantial variation in their infectivity for humans. This finding is of great importance for quantitative risk assessment as it provides strong evidence for heterogeneity in infectivity among isolates of the same species.