Dr. Horacio Arruda is a medical specialist in public health and preventive medicine. For many years, he focused in the fields of Interventional Epidemiology and the prevention and control of infectious diseases.

From 2000 to 2012, he served as the Director of Public Health at the Québec Department of Health and Social Services. He was a leader in the fields of infectious and communicable diseases, nosocomial infections, occupational and environmental health and emergency measures.

In 2012 he was named National Director of Public Health and Assistant Deputy Minister at the Québec Department of Health and Social Services. It was under his leadership that the first Gouvernment Health Prevention Policy was launched for the 2015-2025 period. From this, Dr. Arruda drafted the first ever Interdepartmental Action Plan for 2017-2021. This policy and the accompanied action plan are one of the first of their kind in North America in the field of preventative medicine.