| phylogenetic analysis of the e2 gene of classical swine fever virus from the guangxi province of southern china. | in this study, suspected classical swine fever (csf) samples from the guangxi province of china were obtained from pigs with acute csf, aborted fetuses, newborn pigs that died at 1-2 days of age, tonsils of healthy pigs, and leukocytes of immunized sows during 2001-2009. about 92 of 775 samples were found to be positive by rt-pcr, and 41 isolates were obtained. phylogenetic analysis was performed on the 31 isolates by sequencing the e2 gene, and the isolates were found to cluster into two groups ... | 2011 | 21287256 |