Epidemiologic differences between cyclosporiasis and cryptosporidiosis in Peruvian children.
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.
Bern
Caryn
C
Division of Parasitic Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30341, USA. cxb9@cdc.gov
Ortega
Ynes
Y
Checkley
William
W
Roberts
Jacquelin M
JM
Lescano
Andres G
AG
Cabrera
Lilia
L
Verastegui
Manuela
M
Black
Robert E
RE
Sterling
Charles
C
Gilman
Robert H
RH
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