Vida microscópica: ¿qué es un virus?

The video explains the concept of viruses, comparing them to computer viruses. It describes viruses as small particles that are neither alive nor dead, using living cells to reproduce. The video highlights the vast number of viruses that can fit in a drop of blood and their role in causing illnesses like colds, measles, influenza, smallpox, and HIV. It also discusses the development of vaccines to protect against many dangerous viruses.

Can you name some viruses that can affect humans?

What have scientists developed to protect us from dangerous viruses?