Cynthia L. Sears, MD; Robert D. Newman, MD; Richard L. Guerrant, MD
Sears C., Newman R., Guerrant R.; Cryptosporidium Spread in a Group Residential Home. Ann Intern Med. 1994;121:467-468. doi: 10.7326/0003-4819-121-6-199409150-00031
Download citation file:
Published: Ann Intern Med. 1994;121(6):467-468.
The letter by Drs. Heald and Bartlett further suggests that C. parvum should be regarded as a highly infectious enteric pathogen. The 50% rate of secondary transmission they observed in the first group residential home is similar to the rate of potential person-to-person transmission observed in our studies in an urban slum in northeast Brazil . Further evidence of the ease with which cryptosporidia are spread comes from the apparent nosocomial acquisition of cryptosporidial infection by 45% of nurses, housestaff, and students caring for patients with AIDS and cryptosporidiosis . Given the recently reported low infectious inoculum for C. parvum infection in humans  and the hardy nature of the oocyst of this parasite, the sources of environmental transmission suggested by Heald and Bartlett seem plausible. In the future, the development of molecular diagnostic methods for C. parvum infections will enable studies to determine whether clusters of patients infected with C. parvum carry the same parasite strain. These studies should also allow reservoirs of infection to be clearly identified. We concur that to limit the spread of C. parvum, strict infection control measures are necessary, particularly in crowded living conditions and for immunocompromised patients.
to gain full access to the content and tools.
Learn more about subscription options.
Register Now for a free account.
Copyright © 2016 American College of Physicians. All Rights Reserved.
Print ISSN: 0003-4819 | Online ISSN: 1539-3704
Conditions of Use
This PDF is available to Subscribers Only