Viruses are more abundant than any other biological entity, with 1031 existing on Earth.
That's 10,000,000,000,000,000,000,000,000,000,000, or 10 quadrillion-quadrillion.
The human virome is part of the human microbiome. [2] There are approximately 40 trillion bacteria in the human body, and viruses number 10 times that.