The purpose of the study was to investigate the views of Biology teachers and secondary education students on virus-related subjects taught in secondary education in Turkey. The study adopted the case study deign, one of the qualitative research methods. The participants, who were selected randomly, consisted of 26 Biology teachers and 51 secondary education students on voluntary basis. The data were collected via a semi-structured interview form on viruses that was developed by the researchers. The data were analysed using content analysis method. The results revealed that both student and teacher participants' responses to the question concerning "linking the subject with daily life" showed parallelism; student participants were well-aware that their life would be affected if the viruses were active in their environment, teachers' competencies were considered important for teaching virus-related subjects; and both student and teacher participants were of the opinion that virus-related subjects could be taught more effectively through visual materials.