duration of bluetongue viremia in experimentally infected american bison.six yearling american bison (bison bison bison) bulls and one yearling ewe (ovis aries) were inoculated intradermally and subcutaneously with 2 x 10(5) plaque forming units (pfu) of bluetongue (bt) virus serotype 11. two uninoculated yearling bison bulls served as negative controls. blood samples were collected for serology and virus isolation on 0, 4, 7, 11 and 14 days post-inoculation (dpi) and every 2 wk thereafter to 127 dpi. every 4 wk a new ewe was inoculated with a pooled sample of whole ...200111763735
bluetongue virus isolations from vectors and ruminants in central america and the caribbean. interamerican bluetongue team.a regional prospective study of the epidemiology of bluetongue virus (btv) serotypes covering 11 countries in central america and the caribbean took place between 1987 and 1992. active surveillance revealed btv infection to be endemic in the absence of confirmed indigenous cases of bluetongue. during the 6-year span of the study, over 300 btv isolations were obtained from cattle and sheep. results of the earlier years of the study were summarized, and surveillance activities in the concluding mo ...19948172409
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