What does the term "viral infections" refer to?

The term "viral infections" specifically refers to infections that occur due to viruses. Viruses are microscopic infectious agents that can only replicate inside the living cells of an organism. They can cause a wide range of diseases in humans, animals, and plants. When discussing health and disease, understanding the cause of an infection is crucial for appropriate treatment and management.

The correct answer highlights the specificity of viral infections, distinguishing them from infections caused by other pathogens such as bacteria, fungi, or parasites. Each of these categories involves different types of infections and requires different treatment approaches. For example, bacterial infections can often be treated with antibiotics, while viral infections might require antiviral medications or vaccines for prevention.