Emergencies preparedness, response

Pandemic and epidemic diseases (PED)

Timeline: Yellow fever outbreak 2016

WHO/M. Marrengula

The outbreaks of yellow fever in Angola, Democratic Republic of the Congo and Uganda have placed great demand on the global supply of yellow fever vaccines. The global stockpile of 6 million vaccines for emergency response (normally enough for a year) has already been replenished twice this year.

This timeline shows the demands on the global vaccine supply since early 2016.

Zika virus disease


Zika is a virus spread to humans by Aedes mosquitoes - the same mosquitoes that spread dengue, chikungunya and yellow fever. It usually causes mild illness, with most people sick with the virus getting a slight fever and skin rash. Others may also get conjunctivitis, muscle and joint pain, and feel tired. The symptoms usually finish in 2 to 7 days. The best protection from Zika virus is preventing mosquito bites.

Pandemic and Epidemic Diseases (PED)

Emerging and re-emerging epidemic diseases pose an on-going threat to global health security.
The WHO's Twelfth General Programme of Work sets the reduction of "mortality, morbidity and societal disruption resulting from epidemics... through prevention, preparedness, response and recovery activities" as one its five strategic imperatives.

The Department of Pandemic and Epidemic Diseases (PED) develops strategies, initiatives, and mechanisms to address priority emerging and re-emerging epidemic diseases, thereby reducing their impact on affected populations and limiting their international spread.

Scope of work

Contact information

Department of Pandemic and Epidemic Diseases
World Health Organization
Avenue Appia 20
1211 Geneva 27