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Appl. Environ. Microbiol., 11 1996, 4268-4272, Vol 62, No. 11
F Le Guyader, FH Neill, MK Estes, SS Monroe, T Ando and RL Atmar
Outbreaks of shellfish-transmitted viral disease occur periodically, but
frequently the causative agent is not identified. In November 1993, during
investigation of a multistate outbreak of acute gastroenteritis,
incriminated lots of oysters were collected. Oyster tissues (stomachs and
digestive diverticula) were processed for virus extraction and nucleic acid
purification. Human calicivirus sequences were sought by reverse
transcriptase PCR using different primer sets. Amplicons were obtained from
9 of 10 shellfish samples from four different lots when primers specific
for the outbreak virus strain were used. The specificity of the
amplification was confirmed by hybridization. The amplicons from the nine
positive oysters were cloned and sequenced. The sequence of each of the
clones was identical to the others but showed some variation (7 of 81 bp)
from the sequences obtained from the stools of three persons made III by
the outbreak.
Copyright © 1996, American Society for Microbiology
Detection and analysis of a small round-structured virus strain in oysters implicated in an outbreak of acute gastroenteritis
Division of Molecular Virology, Baylor College of Medicine, Houston, Texas 77030, USA.
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