1. Prevention Strategies for Seasonal Influenza in Healthcare Settings. http://www.cdc.gov/flu/professionals/infectioncontrol/healthcaresettings.htm . Accessed on 4 Sept 2014.
2. World Health Organization. Infection prevention and control of epidemic-and pandemic-prone acute respiratory infections in health care. Geneva: World Health Organization; 2014.
3. Respiratory Protection in Health-Care Settings. http://www.cdc.gov/tb/publications/factsheets/prevention/rphcs.htm . Accessed on 4 Sept 2014.
4. World Health Organization. WHO policy on TB infection control in health-care facilities, congregate settings and households. Canberra: World Health Organization; 2009.
5. Fineberg HV. Pandemic preparedness and response — Lessons from the H1N1 Influenza of 2009. N Engl J Med. 2014;370:1335–42.