A total of 23 rotavirus strains isolated from pigs were analyzed. Twenty st
rains had been isolated from diarrheic piglets from an outbreak that occurr
ed in northern Italy in 1983. Three strains had been isolated in 1984 from
swine herds located in distinct areas of northern Italy. All 23 strains wer
e characterized as type G6P[5] by PCR. The isolation from piglets of rotavi
ruses displaying typical bovine G- and P-type specificities points out the
high frequency of rotavirus transmission between cattle and pigs.