Global Alert and Response (GAR)

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


  • 16 April 2015
    Middle East Respiratory Syndrome coronavirus (MERS-CoV) – Saudi Arabia
  • 15 April 2015
    Human infection with avian influenza A(H7N9) virus – China
  • 9 April 2015
    Middle East respiratory syndrome coronavirus (MERS-CoV) – Saudi Arabia