title: [Epidemiological studies on human cryptosporidiosis in rural and urban areas of Jiangsu].
abstract: A survey of cryptosporidiosis in outpatients and inhabitants in Xuzhou city and 6 rural areas of Jiangsu Province was carried out from 1989 to 1991. Cryptosporidium oocysts (CSO) were found in 97 (1.6%) of 6,221 individuals as a whole, and were detected in 39 (3.3%) of 1,172 outpatients among the examinees. 39 cases were from 31 towns and villages of 8 counties near Xuzhou city. Among the 136 cases, 83 were males and 53 females, of them 89 (65.4%) were infants and young children. The incidence was evidently higher in the group of children under 4 than in that aged 4 to 15 (P < 0.01). Diarrhea, intermittent or persistent, was the main symptom of cryptosporidiosis, being present in 94 (69.1%) of the 136 positive cases, while the other 42 were asymptomatic carriers. The results of routine blood examination and immunoassay performed in a part of the infected children indicated that more than half of them had anemia and lessened cellular immunity. Stool examination of the domestic animals of the affected households showed that a pig and a dog were CSO positive.
authors.affiliation: Research Laboratories of Parasitic Diseases, Xuzhou Medical College.
authors.forename: Y G
authors.initials: YG
authors.lastname: Chen
authors.forename: F B
authors.initials: FB
authors.lastname: Yao
authors.forename: H S
authors.initials: HS
authors.lastname: Li
authors.forename: W S
authors.initials: WS
authors.lastname: Shi
authors.forename: M X
authors.initials: MX
authors.lastname: Dai
authors.forename: M
authors.initials: M
authors.lastname: Lu
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D003457:Cryptosporidiosis / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D012424:Rural Population; D014505:Urban Population