Margaret Parker, MD, FCCM, speaks with John T. Berger, MD, FCCM, Medical Director for Cardiac Critical Care at Children’s National Medical Center in Washington, DC, USA. Dr. Berger is with us today to discuss his article “Critical Pertussis Illness in Children, A Multicenter Prospective Cohort Study” which was published in the May 2013 Pediatric Critical Care Medicine. Dr. Berger and his colleagues found that pulmonary hypertension may be associated with mortality in pertussis critical illness.