Viral pathogenesis is the study of how viruses cause disease in their hosts. This field explores the mechanisms by which viruses infect cells, evade host immune responses, and manipulate host cellular processes to facilitate their replication and spread. Understanding viral pathogenesis is crucial for developing vaccines, antiviral therapies, and other strategies to control and prevent viral infections. Researchers in this area investigate a wide range of viruses, including influenza, HIV, Zika, and Ebola, among others. They use a variety of experimental approaches, including cell culture, animal models, and human studies, to uncover the molecular and cellular mechanisms underlying viral diseases.