All live animals were monitored daily for clinical signs under anesthesia twice a day. Body temperature was measured by inserting a soft probe attached to an Omron electronic digital stick thermometer (MC-BOMR, Omron Co.) into the rectum 2 cm from the anal margin for one minute [18] (link). All clinical signs were monitored from day 2 p.i.. Venous blood of biological indicators such as blood cell count using the Veterinary Multi-species Hematology System (Hemavet 950FS, Drew Scientific Co.) and evaluation of the viral load were performed.
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