The B Virus, also known as Herpes simian virus 1, is a virus primarily found in macaca monkeys. It can cause severe illness in humans if transmitted, leading to neurological complications and potentially death. The virus is typically spread through bites, scratches, or contact with infected bodily fluids. Infection with the B Virus is rare, but it is important for people who work with primates to take precautions. Symptoms in humans may include fever, headache, and neurological issues. Early diagnosis and treatment are crucial for improving outcomes in infected individuals.