(Internet) 06/01/06 A case involving seven transplant recipients killed by a rodent-borne virus that they apparently acquired from donated and infected human organs has prompted a recommendation that regulatory authorities require suppliers of pet rodents to screen their colonies for the virus. LCVM was "among the first human pathogenic viruses to be isolated by medical researchers in the mid-1930s. It is one of about 20 members of the virus family Arenaviridae, each one of which in nature infects a separate rodent species that spreads the virus but causes minimal or no overt disease in the rodent host, according to Dr. C.J. Peters, professor of pathology and microbiology and immunology at the University of Texas Medical Branch at Galveston UTMB and director for biodefense at UTMB's Center for Biodefense and Emerging Infectious Diseases.