<i>Cryptosporidium sp</i>. (IMAGE) McGill University Health Centre Caption Optical microscopy showing ooscysts of Cryptosporidium sp (in red). Credit Dr. Katherine Thivierge (Laboratoire de santé publique du Québec, Institut national de santé publique du Québec) Usage Restrictions Credit the author License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.