What is one of the best defenses against human viral diseases?

One of the best defenses against human viral diseases is vaccination. Vaccines stimulate the immune system to recognize and combat specific viruses, providing immunity and reducing the risk of infection and severe illness. Additionally, maintaining good hygiene practices, such as handwashing and using sanitizers, can further help prevent the spread of viruses. Together, these strategies are essential in controlling and preventing outbreaks of viral diseases.