Shutterstock June 24, 2021 We found more than 54,000 viruses in people’s poo — and 92% were previously unknown to science Philip Hugenholtz, The University of Queensland and Soo Jen Low, The University of Queensland You could say there are a ‘crapload’ of viruses in the human gut. Luckily, most of these do not attack our cells, but instead feed on bacteria.