<p>His research interests center on the immunobiology of bovine and human cryptosporidiosis, a common diarrheal disease of humans and livestock throughout the world caused by the parasitic protozoan parasites em>Cryptosporidium parvum and C. hominis< His laboratory’s research has focused on characterizing immune responses to em>Cryptosporidium< development of recombinant vaccines, immunotherapeutics and new drug discovery for cryptosporidiosis; definition of the molecular pathogenesis of host cell recognition, attachment, and invasion by em>Cryptosporidium< animal model refinement for em>C. parvum< and em>C. hominis< and improved methods for diagnosis. Since 1989, his em>Cryptosporidium< research program has been supported by funding as Principal Investigator from the NIH, USDA, Bill and Melinda Gates and other private foundations and industry, and is currently supported for new drug discovery by NIH and private industry. Research discoveries during this period have led to 13 issued patents 8 U.S. 5 foreign) and two additional foreign patent applications pending for em>Cryptosporidium< inventions, eight licensing agreements for patented intellectual property, and numerous refereed publications and scholarly book chapters. <p>strong>Biosketch<strong> <p> <p>strong>Selected Research Publications strong> <p>a href=http:www.ncbi.nlm.nih.gov/sites/myncbi/1p3Mrbqa5n7Qpibliography/48561276ublic/sort=date&direction=ascending" target=blank" rel=noreferrer noopener"http:www.ncbi.nlm.nih.gov/sites/myncbi/1p3Mrbqa5n7Qpibliography/48561276ublic/sort=date&direction=ascending<a> < <p> <p>