Incidence of cryptosporidiosis species in paediatric patients in Malawi

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Abstract
SUMMARY: We determined the incidence of cryptosporidiosis in children aged Cryptosporidiumspp. oocysts. Species determination was by polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) of oocyst-extracted DNA using 18S rRNA and COWP gene loci.Cryptosporidiumspp. oocysts were seen in 5·9% (50/848) of samples, of which 43 amplified by PCR–RFLP indicated the following species:C. hominis,C. parvum,C. hominis/C. parvum,C. meleagridisandC. andersoni. Seven samples could not be amplified by PCR. Wider species diversity was found in the rural setting, and may be a result of increased malnutrition and zoonotic exposure in this area. Improvements in water, sanitation, household hygiene and animal control are required to reduce the incidence of infection in this population.

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