Re-think MLV IBR Vaccines
Jim Dickrell
Beef Today
Infectious bovine rhinotracheitis (IBR) is a herpes virus. Like all herpes viruses, IBR can go into a latency phase within the animal’s brain. But when the animal is stressed with another shot of the live virus, the virus is reactivated, enters the blood stream and migrates to the ovaries and fast growing tissue like embryos and fetuses.