Dr. Stefan Pukatzki is a Professor of Immunology and Microbiology at the University of Colorado in Denver. Dr. Pukatzki studies Vibrio cholerae, the bacterium that causes the human disease cholera. Cholera is a dangerous water-borne disease that rapidly spreads through human populations in large epidemics.  Dr. Pukatzki discovered that V. cholerae has a stabbing device, the Type Six Secretion system, that it uses to inject poisons into surrounding bacteria to kill them off and gain a competitive advantage.  This stabbing device is wide-spread through many types of bacteria, illuminating the violent interactions that regularly take place among microbes.  Dr. Pukatzki discusses Type Six Secretion, cholera, and serendipity.

Discussants (in alphabetical order):
Dr. Neal Guentzel (Professor and Parliamentarian of STCEID, UTSA)

Dr. Karl Klose (Professor and Director of STCEID,  UTSA)


Jeffrey Stott

Dr. Jeffrey Stott is a Professor of Microbiology and Immunology at the University of California, Davis. Dr. Stott studies the cause of an unusual tick-borne disease localized in cattle in California. Epizootic Bovine Abortion is caused by bacteria that cannot be grown in the laboratory, which has hampered the development of vaccines against this disease that leads to up to 5-10% of all cattle abortions in California. Dr. Stott discusses the search for an effective vaccine, as well as his interest in studying diseases in sea mammals like sea lions and dolphins.

Discussants (in alphabetical order):
Dr. Hans Heidner (Professor, STCEID, UTSA)
Dr. Janakiram Seshu (Associate professor, STCEID,  UTSA)