BVD also known as Bovine Viral Diarrhea causes abortions and the birth of infected calves. Depending on the time of infection, the fetus may be aborted, be born dead or be born infected. Infected animals including calves will constantly shed the virus in bodily fluids putting the other animals in the herd at risk of infection as well. Symptoms of virus include diarrhea as well as oral and nasal ulcers. Both males and females can be infected with this virus so it important to test both before breeding. If a male carrier breeds a female, she is now infected and will most likely have an abortion. There is no treatment available for this virus, only injections to help boost the immunity against it. Many animals that get infected should be culled from the herd to ensure the rest of the herd isn’t infected as well.