In addition , in recent years , virulent , systemic FCV ( vs - FCV ) strains <*> have been reported in cats .
causing severe systemic diseases with a high mortality rate of up to 67 %
In addition , in recent years , virulent , systemic FCV ( vs - FCV ) strains causing severe systemic diseases with a high mortality rate of up to 67 % have been reported in cats .
In addition , in recent years , virulent , systemic FCV ( vs - FCV ) strains causing severe systemic diseases with a high mortality rate of up to 67 % have been reported in cats .