title: Epidemiologic differences between cyclosporiasis and cryptosporidiosis in Peruvian children.
abstract: We compared the epidemiologic characteristics of cyclosporiasis and cryptosporidiosis in data from a cohort study of diarrhea in a periurban community near Lima, Peru. Children had an average of 0.20 episodes of cyclosporiasis/year and 0.22 episodes of cryptosporidiosis/year of follow-up. The incidence of cryptosporidiosis peaked at 0.42 for 1-year-old children and declined to 0.06 episodes/child-year for 5- to 9-year-old children. In contrast, the incidence of cyclosporiasis was fairly constant among 1- to 9-year-old children (0.21 to 0.28 episodes/child-year). Likelihood of diarrhea decreased significantly with each episode of cyclosporiasis; for cryptosporidiosis, this trend was not statistically significant. Both infections were more frequent during the warm season (December to May) than the cooler season (June to November). Cryptosporidiosis was more frequent in children from houses without a latrine or toilet. Cyclosporiasis was associated with ownership of domestic animals, especially birds, guinea pigs, and rabbits.
authors.affiliation: Division of Parasitic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30341, USA. cxb9@cdc.gov
authors.forename: Caryn
authors.initials: C
authors.lastname: Bern
authors.forename: Ynes
authors.initials: Y
authors.lastname: Ortega
authors.forename: William
authors.initials: W
authors.lastname: Checkley
authors.forename: Jacquelin M
authors.initials: JM
authors.lastname: Roberts
authors.forename: Andres G
authors.initials: AG
authors.lastname: Lescano
authors.forename: Lilia
authors.initials: L
authors.lastname: Cabrera
authors.forename: Manuela
authors.initials: M
authors.lastname: Verastegui
authors.forename: Robert E
authors.initials: RE
authors.lastname: Black
authors.forename: Charles
authors.initials: C
authors.lastname: Sterling
authors.forename: Robert H
authors.initials: RH
authors.lastname: Gilman
mesh_terms: D000818:Animals; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D003457:Cryptosporidiosis / Q000453:epidemiology* / Q000469:parasitology; D016785:Cryptosporidium parvum / Q000302:isolation & purification*; D021744:Cyclospora / Q000302:isolation & purification*; D021866:Cyclosporiasis / Q000453:epidemiology* / Q000469:parasitology; D003967:Diarrhea / Q000453:epidemiology / Q000469:parasitology; D005243:Feces / Q000469:parasitology; D005260:Female; D006801:Humans; D007223:Infant; D008137:Longitudinal Studies; D008297:Male; D010568:Peru / Q000453:epidemiology; D011204:Poverty Areas; D012044:Regression Analysis