Viral Pathogenesis The process of producing diseases by viral infections The factors that determine the development of viral disease in the host involve complex and dynamic interactions between the virus and the susceptible host o Disease severities are varied, ranging from very mild to fatal depending on the role of both viral and host factors in influencing viral infection and disease progressionViral Pathogenesis z The process of di pro ucing diseases by vi l i f ti iral infections z The factors that determine the development of viral disease in the host involve complex and dynamic interactions between the host involve complex and dynamic interactions between the virus and the susceptible host z Disease severities are varied ranging from very mild Disease severities are varied, ranging from very mild to fatal, depending on the role of both viral and host factors in influencing viral infection and disease progression