For this study , we determined the genome sequences of BYD1 and the S1 gene sequences of other five mammalian reovirus isolates ( BLD , JP , and BYL were isolated from different SARS patients during the outbreak , 302I and 302II were isolated from fecal specimens of two children of Beijing in 1982 ) to allow molecular comparison with other previously reported mammalian reoviruses ( MRVs ).