ありーちぇ😷 @ALC_V なるほどSources of virusの項目に、「The rates of carriers in cattle vary from 15–50%」と書いてる。 2010-06-16 19:46:09 ありーちぇ😷 @ALC_V ただすぐ次にThe carrier state in cattle usually does not persist for more than 6 months, although in a small proportion it may last up to 3 years 2010-06-16 19:48:16
