Sergio Ramírez-Estrada MD, PhD. Intensive Care Department, Hospital CIMA, Barcelona, Spain, Sergio Ramírez-Estrada was graduated in medicine in 2005 and completed his residency/ fellowship in intensive care medicine at Vall d´Hebron Hospital in Barcelona, Spain (2015). In 2020 he earned his PhD degree by the Universidad Autónoma de Barcelona with the distinction of "summa cum laude" and received the award to the best doctoral thesis  2019-2020. Currently, Dr Ramírez-Estrada is Chief of the Critical Care Department at the CIMA hospital in Barcelona, Spain and colaborates with the Clinical Research & Innovation in Pneumonia and Sepsis (CRIPS) Group at Vall d'Hebron Research Institut. His research include studies on prevention and control of hospital-acquired infections and severe community acquired pneumonia, epidemiology of ventilator-associated events, and treatment of infections in critically ill patients.