1887

Abstract

A PCR protocol was established that not only allows the detection of, but also the differentiation of species of the genus This assay was accomplished by the selection of oligonucleotides located within the gene that encodes the A-type inclusion protein of cowpox virus. The primer pair flanked a region exhibiting distinct and specific DNA deletions in the corresponding sequences of vaccinia, mousepox, monkeypox and camelpox virus. For this reason, PCR resulted in DNA fragments of different sizes. The presented PCR protocol, combined with II restriction digests, allowed the unequivocal assignment of 42 orthopoxvirus (OPY) strains and isolates to the correct OPY species. The resulting classification corresponded exactly with known biological data for the OPV strains investigated. Furthermore, 13 out of 22 cowpox virus isolates could be subtyped by the presence or absence of a small II fragment. DNA sequencing showed that the lack of this II fragment was caused by a deletion of 72 nucleotides.

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1994-08-01
2024-11-04
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