Bunyavirus is a genus of viruses that primarily infects animals and humans. These viruses are transmitted mainly by arthropods, such as mosquitoes and ticks. Bunyaviruses can cause various diseases, including Crimean-Congo hemorrhagic fever and La Crosse encephalitis, which can lead to serious health complications. The structure of bunyaviruses includes a segmented RNA genome, which allows for genetic reassortment. This feature contributes to their ability to adapt and evolve, making them a significant concern for public health. Understanding bunyaviruses is crucial for developing effective vaccines and treatments to combat the diseases they cause.