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Avian Dis. 2003;47(3 Suppl):1069-74.

A NASBA method to detect high- and low-pathogenicity H5 avian influenza viruses.

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  • 1Hong Kong DNA Chips Ltd., 1805-6, 18F, Lu Plaza, 2 Wing Yip Street, Kowloon, Hong Kong SAR, China.


Nucleic acid sequence-based amplification (NASBA) allows the rapid amplification of specific regions of nucleic acid obtained from a diverse range of sources. It is especially suitable for amplifying RNA sequences. A NASBA technique was developed that allows the detection of avian influenza A subtype H5 from allantoic fluid harvested from inoculated chick embryos. The amplified viral RNA is detected by electrochemiluminescence. The described NASBA technique is a specific, rapid, and sensitive method of detection of influenza A subtype H5 viruses. More importantly, it can be used to distinguish high- and low-pathogenicity strains of the H5 subtype.

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