Kirk, Martyn, McKerr, Caoimhe, Adak, Goutam K., Nichols, Gordon, Gorton, Russell, Chalmers, Rachel M., Kafatos, George, Cosford, Paul, Charlett, Andre et al (2015) An Outbreak of Cryptosporidium parvum across England & Scotland Associated with Consumption of Fresh Pre-Cut Salad Leaves, May 2012. PLOS ONE, 10 (5). e0125955.