| http://www.w3.org/ns/prov#value | - Considering this situation, there is a high need to perform comparative studies on the tissue distribution of various variants of the virus in order to study virus biology and to assure the diagnosis.The diagnosis can be complicated by the uncharacteristic profiles of CSF clinical symptoms, which may lead to delayed identification of new outbreaks (see World Organisation for Animal Health, OIE, ht
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