High Five Facts - Viruses

The video provides an overview of viruses, explaining that they are tiny infectious agents that require host cells to reproduce. It discusses the various illnesses viruses can cause in humans, animals, and plants, such as the common cold, influenza, and COVID-19. The video compares the size of viruses to bacteria, noting that viruses are much smaller. It also explains that antibiotics are ineffective against viruses, but antiviral medications can treat some infections. Finally, the video highlights the role of vaccines in protecting against viral infections by teaching the immune system to recognize and fight viruses.

What is a virus and how does it reproduce?

What types of illnesses can viruses cause in humans and animals?

How do viruses compare in size to bacteria?

Why can't antibiotics be used to treat viral infections?

How do vaccines help protect against viral infections?