Viral titres were 10 ( 4 . 4 ) , 10 ( 6 . 1 ) , 10 ( 5 . 2 ) , and 10 ( 2 . 9 ) pfu/animal , on days 1 , 3 , 4 , and 7 after infection , respectively .
viral titres were 10 ( 4 . 4 ) , 10 ( 6 . 1 ) , 10 ( 5 . 2 ) , and 10 ( 2 . 9 ) pfu/animal , on days 1 , 3 , 4 , and 7 after infection , respectively .
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