The Cryptosporidium "human" genotype was identified in a paraffin-embedded
tissue section from a dugong (Dugong dugon) by 2 independent laboratories.
DNA sequencing and polymerase chain reaction/restriction fragment length po
lymorphism analysis of the 18S ribosomal RNA gene and the acetyl CoA synthe
thase gene clearly identified the genotype as that of the Cryptosporidium v
ariant that infects humans. This is the first report of the human Cryptospo
ridium genotype in a nonprimate host.