Primrose Freestone, Associate Professor in Clinical Microbiology at the University of Leicester and science communicator, is an infectious diseases expert, and has dived into the debate of whether swimming in a pool or in the natural environment is the safer option. She also takes us through the cleanliness of hot-tubs (hint, they're gross.)
Songs in this episode - all licensed under a Creative Commons License:
Bugs - GNAAR
Bugs - Phillip Barker
Bug's Land - Vadim Krakhmal
Little bugs - i m p a u s e a b l e
Sapphire - Tobu

Photo from wikimedia