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


  • 15 March 2018
    Middle East respiratory syndrome coronavirus (MERS-CoV) – Oman
  • 9 March 2018
    Yellow fever – Brazil
  • 9 March 2018
    Circulating vaccine-derived poliovirus type 2 – Somalia