Molecular characterization of Cryptosporidium in native beef calves in central Vietnam.
Parasitol Res
; 111(4): 1817-20, 2012 Oct.
Article
em En
| MEDLINE
| ID: mdl-22828931
ABSTRACT
The aims of this study were to investigate the prevalence of Cryptosporidium and to characterize the genotype distribution of Cryptosporidium isolates in native beef calves 2-6 months old in Dac Lac province, central Vietnam. The presence of Cryptosporidium oocysts was determined using the modified Ziehl-Neelsen staining method. The overall prevalence on the sample and herd levels were 18.9% (44/232) and 50% (20/40), respectively. Genotyping based on PCR and sequence analysis of the 18 S rRNA gene revealed occurrence of the two nonzoonotic species Cryptosporidium ryanae and Cryptosporidium bovis, with the former as a dominant species in the animals. The absence of the zoonotic species Cryptosporidium parvum in calves examined suggests that the native beef calves 2-6 months old in the study area are unlikely to contribute to human cryptosporidiosis transmission.
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Base de dados:
MEDLINE
Assunto principal:
Doenças dos Bovinos
/
Criptosporidiose
/
Cryptosporidium
Tipo de estudo:
Prevalence_studies
/
Risk_factors_studies
Limite:
Animals
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article