in Canada. The PHAC houses several bureaucrats: Chief Public Health Officer Chief Science Officer Senior Assistant Deputy Minister—Population and Public Health Integration Branch Assistant Deputy Minister—Infectious Disease and Emergency Preparedness Deputy CPHO—Health Protection and Chronic Disease Prevention Branch Vice-President, Health Promotion and Chronic Disease Prevention Branch Executive Director—Corporate Secretariat Vice-President, Health Security Infrastructure Branch Vice-President, Strategic Policy and Planning Branch Because the portfolio at the PHAC crosses so many boundaries, and especially jurisdictional ones, the civil servants have evolved what are known as Special Advisory Committees (SAC), which include Federal/Provincial/Territorial (FPT) officials such as deputy ministers of health, so as to attempt to ensure a timely response to the needs of Canadians. The Public Health Network Council (PHNC) is an FPT committee that is co-chaired by the deputy CPHO, Dr Howard Njoo. The PHNC is populated by an array of directors, deputies, chiefs, experts and coordinators, from far and wide the public health guardians of Canada. The FPT SAC on Public Health Response Plan for Biological Events has been in place since at least October 2017: Headquarters and leadership The PHAC headquarters are located in two pillars—one is in Ottawa, and the other is the National Microbiology Laboratory in Winnipeg, Manitoba, the location of Canada's only Level 4 microbiology lab for human health. Both the President and the CPHO officiate from Ottawa. The President is ranked above the CPHO in the departmental org chart. President Dr. David Butler-Jones until June 2013 Dr. Gregory W. Taylor appears to have acted as President from June 2013 On 24 October 2014, Krista Outhwaite was appointed by the Harper government. Siddika Mithani was appointed President by Justin Trudeau on 11 April 2016, until her departure for the Presidency of the Canadian Food Inspection Agency on 25 February 2019. Kristina Namiesniowski was named President by Justin Trudeau on 26 April 2019, and took the reins on 6 May 2019. Iain Stewart took the helm on 21 September 2020. He was reportedly "an extremely strategic thinker". CPHO Dr. David Butler-Jones was the agency's first joint CPHO and President, until his retirement in June 2013. Dr. Gregory W. Taylor appears to have acted as CPHO from June 2013 Dr. Gregory W. Taylor held the position of CPHO from September 2014 until his retirement in December 2016, at which time his deputy was appointed to act in his stead. Dr. Theresa Tam was appointed CPHO on 26 June