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. 2006 Jun;12(6):1025-8.
doi: 10.3201/eid1206.060015.

Mixed Cryptosporidium infections and HIV

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Mixed Cryptosporidium infections and HIV

Vitaliano Cama et al. Emerg Infect Dis. 2006 Jun.

Abstract

Mixed Cryptosporidium infections were detected in 7 of 21 patients with a diagnosis of rare Cryptosporidium canis or C. felis infections; 6 patients were infected with 2 Cryptosporidium spp. and 1 patient with 3 species. Mixed infections may occur more frequently than previously believed and should be considered when assessing cryptosporidiosis.

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Figures

Figure
Figure
Multilocus polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) analysis of specimens previously identified as Cryptosporidium canis and C. felis. A) Agarose gel electrophoresis of PCR-amplified products of specimens previously identified as C. canis (lanes 1–3) and C. felis (lanes 4 and 5) with molecular tools based on the small subunit (SSU) rRNA, dihydrofolate reductase (DHFR), and Cryptosporidium oocyst wall protein (COWP). Molecular markers in all photos are 100-bp ladders. B) RFLP analysis of DHFR-based PCR amplification products using BpuA I restriction enzyme; lanes 1, 4, and 5 are C. hominis; lane 2 is C. parvum; and lane 3 is C. meleagridis. C) RFLP analysis of COWP-based PCR amplification products using Rsa I restriction enzyme; lanes 1, 4, and 5 are C. hominis; lane 2 is C. parvum; and lane 3 is C. meleagridis. D) RFLP analysis of the SSU-based PCR products using restriction enzymes Ssp I (left) and Vsp I (right); the combined patterns for lanes 1 to 3 correspond to C. canis and lanes 4 and 5 to C. felis.

References

    1. Cama VA, Bern C, Sulaiman IM, Gilman RH, Ticona E, Vivar A, et al. Cryptosporidium species and genotypes in HIV-positive patients in Lima, Peru. J Eukaryot Microbiol. 2003;50(Suppl):531–3. 10.1111/j.1550-7408.2003.tb00620.x - DOI - PubMed
    1. Fretz R, Svoboda P, Ryan UM, Thompson RC, Tanners M, Baumgartner A. Genotyping of Cryptosporidium spp. isolated from human stool specimens in Switzerland. Epidemiol Infect. 2003;131:663–7. 10.1017/S0950268803008781 - DOI - PMC - PubMed
    1. Gile M, Warhurst DC, Webster KA, West DM, Marshall JA. A multiplex allele specific polymerase chain reaction (MAS-PCR) on the dihydrofolate reductase gene for the detection of Cryptosporidium parvum genotypes 1 and 2. Parasitology. 2002;125:35–44. - PubMed
    1. McLauchlin J, Amar C, Pedraza-Diaz S, Nichols GL. Molecular epidemiological analysis of Cryptosporidium spp. in the United Kingdom: results of genotyping Cryptosporidium spp. in 1,705 fecal specimens from humans and 105 fecal specimens from livestock animals. J Clin Microbiol. 2000;38:3984–90. - PMC - PubMed
    1. Mallon M, MacLeod A, Wastling J, Smith H, Reilly B, Tait A. Population structures and the role of genetic exchange in the zoonotic pathogen Cryptosporidium parvum. J Mol Evol. 2003;56:407–17. 10.1007/s00239-002-2412-3 - DOI - PubMed

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