Home > Our Body > Viruses – An Explanation About What They Are Viruses – An Explanation About What They Are Our Body Share on Pinterest Professor Dave talksĀ about viruses and what exactly a virus is. Are they alive and how do they infect a host spreading diseases? Share on Pinterest Related Posts Inside the Lab That Invented the COVID-19 Vaccine 30 Facts About The Human Body You May Not Know Why Do We Have Different Blood Types? Seventeen Jaw Dropping Facts About The Human Body Where Did Viruses Come From?