Emergencies preparedness, response

Severe Acute Respiratory Syndrome (SARS)

SARS was recognized at the end of February 2003. WHO co-ordinated the international investigation with the assistance of the Global Outbreak Alert and Response Network and worked closely with health authorities in the affected countries to provide epidemiological, clinical and logistical support as required.


Guidance on SARS

October 2004


  • 2 February 2016
    Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia
  • 29 January 2016
    Zika virus infection – United States of America - United States Virgin Islands
  • 29 January 2016
    Circulating vaccine-derived poliovirus – Lao People’s Democratic Republic